328640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:109

約数の個数: 56

約数和(自身を含む): 853440

約数和(自身を除く): 524800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 79, 80, 104, 130, 158, 160, 208, 260, 316, 320, 395, 416, 520, 632, 790, 832, 1027, 1040, 1264, 1580, 2054, 2080, 2528, 3160, 4108, 4160, 5056, 5135, 6320, 8216, 10270, 12640, 16432, 20540, 25280, 32864, 41080, 65728, 82160, 164320, 328640]

約数ペア:

[(1, 328640), (2, 164320), (4, 82160), (5, 65728), (8, 41080), (10, 32864), (13, 25280), (16, 20540), (20, 16432), (26, 12640), (32, 10270), (40, 8216), (52, 6320), (64, 5135), (65, 5056), (79, 4160), (80, 4108), (104, 3160), (130, 2528), (158, 2080), (160, 2054), (208, 1580), (260, 1264), (316, 1040), (320, 1027), (395, 832), (416, 790), (520, 632)]