18919640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27823}}^1$

素因数の和:27851

約数の個数: 32

約数和(自身を含む): 45074880

約数和(自身を除く): 26155240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27823, 55646, 111292, 139115, 222584, 278230, 472991, 556460, 945982, 1112920, 1891964, 2364955, 3783928, 4729910, 9459820, 18919640]

約数ペア:

[(1, 18919640), (2, 9459820), (4, 4729910), (5, 3783928), (8, 2364955), (10, 1891964), (17, 1112920), (20, 945982), (34, 556460), (40, 472991), (68, 278230), (85, 222584), (136, 139115), (170, 111292), (340, 55646), (680, 27823)]