21317750

素因数分解:

$2^1\times 5^3\times {\mathrm{71}}^1\times {\mathrm{1201}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 40502592

約数和(自身を除く): 19184842

約数列:

[1, 2, 5, 10, 25, 50, 71, 125, 142, 250, 355, 710, 1201, 1775, 2402, 3550, 6005, 8875, 12010, 17750, 30025, 60050, 85271, 150125, 170542, 300250, 426355, 852710, 2131775, 4263550, 10658875, 21317750]

約数ペア:

[(1, 21317750), (2, 10658875), (5, 4263550), (10, 2131775), (25, 852710), (50, 426355), (71, 300250), (125, 170542), (142, 150125), (250, 85271), (355, 60050), (710, 30025), (1201, 17750), (1775, 12010), (2402, 8875), (3550, 6005)]