64939880

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{5861}}^1$

素因数の和:6149

約数の個数: 32

約数和(自身を含む): 146667240

約数和(自身を除く): 81727360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 5861, 11080, 11722, 23444, 29305, 46888, 58610, 117220, 234440, 1623497, 3246994, 6493988, 8117485, 12987976, 16234970, 32469940, 64939880]

約数ペア:

[(1, 64939880), (2, 32469940), (4, 16234970), (5, 12987976), (8, 8117485), (10, 6493988), (20, 3246994), (40, 1623497), (277, 234440), (554, 117220), (1108, 58610), (1385, 46888), (2216, 29305), (2770, 23444), (5540, 11722), (5861, 11080)]