21201180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:396

約数の個数: 192

約数和(自身を含む): 79930368

約数和(自身を除く): 58729188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 20, 21, 22, 26, 28, 30, 33, 35, 39, 42, 44, 52, 55, 60, 65, 66, 70, 77, 78, 84, 91, 105, 110, 130, 132, 140, 143, 154, 156, 165, 182, 195, 210, 220, 231, 260, 273, 286, 308, 330, 353, 364, 385, 390, 420, 429, 455, 462, 546, 572, 660, 706, 715, 770, 780, 858, 910, 924, 1001, 1059, 1092, 1155, 1365, 1412, 1430, 1540, 1716, 1765, 1820, 2002, 2118, 2145, 2310, 2471, 2730, 2860, 3003, 3530, 3883, 4004, 4236, 4290, 4589, 4620, 4942, 5005, 5295, 5460, 6006, 7060, 7413, 7766, 8580, 9178, 9884, 10010, 10590, 11649, 12012, 12355, 13767, 14826, 15015, 15532, 18356, 19415, 20020, 21180, 22945, 23298, 24710, 27181, 27534, 29652, 30030, 32123, 37065, 38830, 45890, 46596, 49420, 50479, 54362, 55068, 58245, 60060, 64246, 68835, 74130, 77660, 81543, 91780, 96369, 100958, 108724, 116490, 128492, 135905, 137670, 148260, 151437, 160615, 163086, 192738, 201916, 232980, 252395, 271810, 275340, 302874, 321230, 326172, 353353, 385476, 407715, 481845, 504790, 543620, 605748, 642460, 706706, 757185, 815430, 963690, 1009580, 1060059, 1413412, 1514370, 1630860, 1766765, 1927380, 2120118, 3028740, 3533530, 4240236, 5300295, 7067060, 10600590, 21201180]

約数ペア:

[(1, 21201180), (2, 10600590), (3, 7067060), (4, 5300295), (5, 4240236), (6, 3533530), (7, 3028740), (10, 2120118), (11, 1927380), (12, 1766765), (13, 1630860), (14, 1514370), (15, 1413412), (20, 1060059), (21, 1009580), (22, 963690), (26, 815430), (28, 757185), (30, 706706), (33, 642460), (35, 605748), (39, 543620), (42, 504790), (44, 481845), (52, 407715), (55, 385476), (60, 353353), (65, 326172), (66, 321230), (70, 302874), (77, 275340), (78, 271810), (84, 252395), (91, 232980), (105, 201916), (110, 192738), (130, 163086), (132, 160615), (140, 151437), (143, 148260), (154, 137670), (156, 135905), (165, 128492), (182, 116490), (195, 108724), (210, 100958), (220, 96369), (231, 91780), (260, 81543), (273, 77660), (286, 74130), (308, 68835), (330, 64246), (353, 60060), (364, 58245), (385, 55068), (390, 54362), (420, 50479), (429, 49420), (455, 46596), (462, 45890), (546, 38830), (572, 37065), (660, 32123), (706, 30030), (715, 29652), (770, 27534), (780, 27181), (858, 24710), (910, 23298), (924, 22945), (1001, 21180), (1059, 20020), (1092, 19415), (1155, 18356), (1365, 15532), (1412, 15015), (1430, 14826), (1540, 13767), (1716, 12355), (1765, 12012), (1820, 11649), (2002, 10590), (2118, 10010), (2145, 9884), (2310, 9178), (2471, 8580), (2730, 7766), (2860, 7413), (3003, 7060), (3530, 6006), (3883, 5460), (4004, 5295), (4236, 5005), (4290, 4942), (4589, 4620)]