81321240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{677}}^1$

素因数の和:722

約数の個数: 256

約数和(自身を含む): 328043520

約数和(自身を除く): 246722280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 20, 21, 22, 24, 26, 28, 30, 33, 35, 39, 40, 42, 44, 52, 55, 56, 60, 65, 66, 70, 77, 78, 84, 88, 91, 104, 105, 110, 120, 130, 132, 140, 143, 154, 156, 165, 168, 182, 195, 210, 220, 231, 260, 264, 273, 280, 286, 308, 312, 330, 364, 385, 390, 420, 429, 440, 455, 462, 520, 546, 572, 616, 660, 677, 715, 728, 770, 780, 840, 858, 910, 924, 1001, 1092, 1144, 1155, 1320, 1354, 1365, 1430, 1540, 1560, 1716, 1820, 1848, 2002, 2031, 2145, 2184, 2310, 2708, 2730, 2860, 3003, 3080, 3385, 3432, 3640, 4004, 4062, 4290, 4620, 4739, 5005, 5416, 5460, 5720, 6006, 6770, 7447, 8008, 8124, 8580, 8801, 9240, 9478, 10010, 10155, 10920, 12012, 13540, 14217, 14894, 15015, 16248, 17160, 17602, 18956, 20020, 20310, 22341, 23695, 24024, 26403, 27080, 28434, 29788, 30030, 35204, 37235, 37912, 40040, 40620, 44005, 44682, 47390, 52129, 52806, 56868, 59576, 60060, 61607, 70408, 71085, 74470, 81240, 88010, 89364, 94780, 96811, 104258, 105612, 111705, 113736, 120120, 123214, 132015, 142170, 148940, 156387, 176020, 178728, 184821, 189560, 193622, 208516, 211224, 223410, 246428, 260645, 264030, 284340, 290433, 297880, 308035, 312774, 352040, 369642, 387244, 417032, 446820, 484055, 492856, 521290, 528060, 568680, 580866, 616070, 625548, 677677, 739284, 774488, 781935, 893640, 924105, 968110, 1042580, 1056120, 1161732, 1232140, 1251096, 1355354, 1452165, 1478568, 1563870, 1848210, 1936220, 2033031, 2085160, 2323464, 2464280, 2710708, 2904330, 3127740, 3388385, 3696420, 3872440, 4066062, 5421416, 5808660, 6255480, 6776770, 7392840, 8132124, 10165155, 11617320, 13553540, 16264248, 20330310, 27107080, 40660620, 81321240]

約数ペア:

[(1, 81321240), (2, 40660620), (3, 27107080), (4, 20330310), (5, 16264248), (6, 13553540), (7, 11617320), (8, 10165155), (10, 8132124), (11, 7392840), (12, 6776770), (13, 6255480), (14, 5808660), (15, 5421416), (20, 4066062), (21, 3872440), (22, 3696420), (24, 3388385), (26, 3127740), (28, 2904330), (30, 2710708), (33, 2464280), (35, 2323464), (39, 2085160), (40, 2033031), (42, 1936220), (44, 1848210), (52, 1563870), (55, 1478568), (56, 1452165), (60, 1355354), (65, 1251096), (66, 1232140), (70, 1161732), (77, 1056120), (78, 1042580), (84, 968110), (88, 924105), (91, 893640), (104, 781935), (105, 774488), (110, 739284), (120, 677677), (130, 625548), (132, 616070), (140, 580866), (143, 568680), (154, 528060), (156, 521290), (165, 492856), (168, 484055), (182, 446820), (195, 417032), (210, 387244), (220, 369642), (231, 352040), (260, 312774), (264, 308035), (273, 297880), (280, 290433), (286, 284340), (308, 264030), (312, 260645), (330, 246428), (364, 223410), (385, 211224), (390, 208516), (420, 193622), (429, 189560), (440, 184821), (455, 178728), (462, 176020), (520, 156387), (546, 148940), (572, 142170), (616, 132015), (660, 123214), (677, 120120), (715, 113736), (728, 111705), (770, 105612), (780, 104258), (840, 96811), (858, 94780), (910, 89364), (924, 88010), (1001, 81240), (1092, 74470), (1144, 71085), (1155, 70408), (1320, 61607), (1354, 60060), (1365, 59576), (1430, 56868), (1540, 52806), (1560, 52129), (1716, 47390), (1820, 44682), (1848, 44005), (2002, 40620), (2031, 40040), (2145, 37912), (2184, 37235), (2310, 35204), (2708, 30030), (2730, 29788), (2860, 28434), (3003, 27080), (3080, 26403), (3385, 24024), (3432, 23695), (3640, 22341), (4004, 20310), (4062, 20020), (4290, 18956), (4620, 17602), (4739, 17160), (5005, 16248), (5416, 15015), (5460, 14894), (5720, 14217), (6006, 13540), (6770, 12012), (7447, 10920), (8008, 10155), (8124, 10010), (8580, 9478), (8801, 9240)]