72867880

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{2887}}^1$

素因数の和:3529

約数の個数: 32

約数和(自身を含む): 164269440

約数和(自身を除く): 91401560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 2887, 3155, 5048, 5774, 6310, 11548, 12620, 14435, 23096, 25240, 28870, 57740, 115480, 1821697, 3643394, 7286788, 9108485, 14573576, 18216970, 36433940, 72867880]

約数ペア:

[(1, 72867880), (2, 36433940), (4, 18216970), (5, 14573576), (8, 9108485), (10, 7286788), (20, 3643394), (40, 1821697), (631, 115480), (1262, 57740), (2524, 28870), (2887, 25240), (3155, 23096), (5048, 14435), (5774, 12620), (6310, 11548)]