257673780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15731}}^1$

素因数の和:15766

約数の個数: 144

約数和(自身を含む): 962043264

約数和(自身を除く): 704369484

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, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 15731, 16380, 31462, 47193, 62924, 78655, 94386, 110117, 141579, 157310, 188772, 204503, 220234, 235965, 283158, 314620, 330351, 409006, 440468, 471930, 550585, 566316, 613509, 660702, 707895, 818012, 943860, 991053, 1022515, 1101170, 1227018, 1321404, 1415790, 1431521, 1651755, 1840527, 1982106, 2045030, 2202340, 2454036, 2831580, 2863042, 3067545, 3303510, 3681054, 3964212, 4090060, 4294563, 4955265, 5726084, 6135090, 6607020, 7157605, 7362108, 8589126, 9202635, 9910530, 12270180, 12883689, 14315210, 17178252, 18405270, 19821060, 21472815, 25767378, 28630420, 36810540, 42945630, 51534756, 64418445, 85891260, 128836890, 257673780]

約数ペア:

[(1, 257673780), (2, 128836890), (3, 85891260), (4, 64418445), (5, 51534756), (6, 42945630), (7, 36810540), (9, 28630420), (10, 25767378), (12, 21472815), (13, 19821060), (14, 18405270), (15, 17178252), (18, 14315210), (20, 12883689), (21, 12270180), (26, 9910530), (28, 9202635), (30, 8589126), (35, 7362108), (36, 7157605), (39, 6607020), (42, 6135090), (45, 5726084), (52, 4955265), (60, 4294563), (63, 4090060), (65, 3964212), (70, 3681054), (78, 3303510), (84, 3067545), (90, 2863042), (91, 2831580), (105, 2454036), (117, 2202340), (126, 2045030), (130, 1982106), (140, 1840527), (156, 1651755), (180, 1431521), (182, 1415790), (195, 1321404), (210, 1227018), (234, 1101170), (252, 1022515), (260, 991053), (273, 943860), (315, 818012), (364, 707895), (390, 660702), (420, 613509), (455, 566316), (468, 550585), (546, 471930), (585, 440468), (630, 409006), (780, 330351), (819, 314620), (910, 283158), (1092, 235965), (1170, 220234), (1260, 204503), (1365, 188772), (1638, 157310), (1820, 141579), (2340, 110117), (2730, 94386), (3276, 78655), (4095, 62924), (5460, 47193), (8190, 31462), (15731, 16380)]