28408640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6829}}^1$

素因数の和:6859

約数の個数: 56

約数和(自身を含む): 72862440

約数和(自身を除く): 44453800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 6829, 13658, 27316, 34145, 54632, 68290, 88777, 109264, 136580, 177554, 218528, 273160, 355108, 437056, 443885, 546320, 710216, 887770, 1092640, 1420432, 1775540, 2185280, 2840864, 3551080, 5681728, 7102160, 14204320, 28408640]

約数ペア:

[(1, 28408640), (2, 14204320), (4, 7102160), (5, 5681728), (8, 3551080), (10, 2840864), (13, 2185280), (16, 1775540), (20, 1420432), (26, 1092640), (32, 887770), (40, 710216), (52, 546320), (64, 443885), (65, 437056), (80, 355108), (104, 273160), (130, 218528), (160, 177554), (208, 136580), (260, 109264), (320, 88777), (416, 68290), (520, 54632), (832, 34145), (1040, 27316), (2080, 13658), (4160, 6829)]