281392020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:495

約数の個数: 288

約数和(自身を含む): 1078721280

約数和(自身を除く): 797329260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 41, 42, 45, 52, 60, 63, 65, 70, 78, 82, 84, 90, 91, 105, 117, 123, 126, 130, 140, 156, 164, 180, 182, 195, 205, 210, 234, 246, 252, 260, 273, 287, 315, 364, 369, 390, 410, 419, 420, 455, 468, 492, 533, 546, 574, 585, 615, 630, 738, 780, 819, 820, 838, 861, 910, 1066, 1092, 1148, 1170, 1230, 1257, 1260, 1365, 1435, 1476, 1599, 1638, 1676, 1722, 1820, 1845, 2095, 2132, 2340, 2460, 2514, 2583, 2665, 2730, 2870, 2933, 3198, 3276, 3444, 3690, 3731, 3771, 4095, 4190, 4305, 4797, 5028, 5166, 5330, 5447, 5460, 5740, 5866, 6285, 6396, 7380, 7462, 7542, 7995, 8190, 8380, 8610, 8799, 9594, 10332, 10660, 10894, 11193, 11732, 12570, 12915, 14665, 14924, 15084, 15990, 16341, 16380, 17179, 17220, 17598, 18655, 18855, 19188, 21788, 22386, 23985, 25140, 25830, 26397, 27235, 29330, 31980, 32682, 33579, 34358, 35196, 37310, 37710, 38129, 43995, 44772, 47970, 49023, 51537, 51660, 52794, 54470, 55965, 58660, 65364, 67158, 68716, 74620, 75420, 76258, 81705, 85895, 87990, 95940, 98046, 103074, 105588, 108940, 111930, 114387, 120253, 131985, 134316, 152516, 154611, 163410, 167895, 171790, 175980, 190645, 196092, 206148, 223327, 223860, 228774, 240506, 245115, 257685, 263970, 309222, 326820, 335790, 343161, 343580, 360759, 381290, 446654, 457548, 481012, 490230, 515370, 527940, 571935, 601265, 618444, 669981, 671580, 686322, 721518, 762580, 773055, 893308, 980460, 1030740, 1082277, 1116635, 1143870, 1202530, 1339962, 1372644, 1443036, 1546110, 1563289, 1715805, 1803795, 2009943, 2164554, 2233270, 2287740, 2405060, 2679924, 3092220, 3126578, 3349905, 3431610, 3607590, 4019886, 4329108, 4466540, 4689867, 5411385, 6253156, 6699810, 6863220, 7215180, 7816445, 8039772, 9379734, 10049715, 10822770, 13399620, 14069601, 15632890, 18759468, 20099430, 21645540, 23449335, 28139202, 31265780, 40198860, 46898670, 56278404, 70348005, 93797340, 140696010, 281392020]

約数ペア:

[(1, 281392020), (2, 140696010), (3, 93797340), (4, 70348005), (5, 56278404), (6, 46898670), (7, 40198860), (9, 31265780), (10, 28139202), (12, 23449335), (13, 21645540), (14, 20099430), (15, 18759468), (18, 15632890), (20, 14069601), (21, 13399620), (26, 10822770), (28, 10049715), (30, 9379734), (35, 8039772), (36, 7816445), (39, 7215180), (41, 6863220), (42, 6699810), (45, 6253156), (52, 5411385), (60, 4689867), (63, 4466540), (65, 4329108), (70, 4019886), (78, 3607590), (82, 3431610), (84, 3349905), (90, 3126578), (91, 3092220), (105, 2679924), (117, 2405060), (123, 2287740), (126, 2233270), (130, 2164554), (140, 2009943), (156, 1803795), (164, 1715805), (180, 1563289), (182, 1546110), (195, 1443036), (205, 1372644), (210, 1339962), (234, 1202530), (246, 1143870), (252, 1116635), (260, 1082277), (273, 1030740), (287, 980460), (315, 893308), (364, 773055), (369, 762580), (390, 721518), (410, 686322), (419, 671580), (420, 669981), (455, 618444), (468, 601265), (492, 571935), (533, 527940), (546, 515370), (574, 490230), (585, 481012), (615, 457548), (630, 446654), (738, 381290), (780, 360759), (819, 343580), (820, 343161), (838, 335790), (861, 326820), (910, 309222), (1066, 263970), (1092, 257685), (1148, 245115), (1170, 240506), (1230, 228774), (1257, 223860), (1260, 223327), (1365, 206148), (1435, 196092), (1476, 190645), (1599, 175980), (1638, 171790), (1676, 167895), (1722, 163410), (1820, 154611), (1845, 152516), (2095, 134316), (2132, 131985), (2340, 120253), (2460, 114387), (2514, 111930), (2583, 108940), (2665, 105588), (2730, 103074), (2870, 98046), (2933, 95940), (3198, 87990), (3276, 85895), (3444, 81705), (3690, 76258), (3731, 75420), (3771, 74620), (4095, 68716), (4190, 67158), (4305, 65364), (4797, 58660), (5028, 55965), (5166, 54470), (5330, 52794), (5447, 51660), (5460, 51537), (5740, 49023), (5866, 47970), (6285, 44772), (6396, 43995), (7380, 38129), (7462, 37710), (7542, 37310), (7995, 35196), (8190, 34358), (8380, 33579), (8610, 32682), (8799, 31980), (9594, 29330), (10332, 27235), (10660, 26397), (10894, 25830), (11193, 25140), (11732, 23985), (12570, 22386), (12915, 21788), (14665, 19188), (14924, 18855), (15084, 18655), (15990, 17598), (16341, 17220), (16380, 17179)]