654160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:80

約数の個数: 80

約数和(自身を含む): 1781136

約数和(自身を除く): 1126976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 37, 40, 52, 65, 68, 74, 80, 85, 104, 130, 136, 148, 170, 185, 208, 221, 260, 272, 296, 340, 370, 442, 481, 520, 592, 629, 680, 740, 884, 962, 1040, 1105, 1258, 1360, 1480, 1768, 1924, 2210, 2405, 2516, 2960, 3145, 3536, 3848, 4420, 4810, 5032, 6290, 7696, 8177, 8840, 9620, 10064, 12580, 16354, 17680, 19240, 25160, 32708, 38480, 40885, 50320, 65416, 81770, 130832, 163540, 327080, 654160]

約数ペア:

[(1, 654160), (2, 327080), (4, 163540), (5, 130832), (8, 81770), (10, 65416), (13, 50320), (16, 40885), (17, 38480), (20, 32708), (26, 25160), (34, 19240), (37, 17680), (40, 16354), (52, 12580), (65, 10064), (68, 9620), (74, 8840), (80, 8177), (85, 7696), (104, 6290), (130, 5032), (136, 4810), (148, 4420), (170, 3848), (185, 3536), (208, 3145), (221, 2960), (260, 2516), (272, 2405), (296, 2210), (340, 1924), (370, 1768), (442, 1480), (481, 1360), (520, 1258), (592, 1105), (629, 1040), (680, 962), (740, 884)]