18854485

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 25021224

約数和(自身を除く): 6166739

約数列:

[1, 5, 13, 53, 65, 169, 265, 421, 689, 845, 2105, 3445, 5473, 8957, 22313, 27365, 44785, 71149, 111565, 290069, 355745, 1450345, 3770897, 18854485]

約数ペア:

[(1, 18854485), (5, 3770897), (13, 1450345), (53, 355745), (65, 290069), (169, 111565), (265, 71149), (421, 44785), (689, 27365), (845, 22313), (2105, 8957), (3445, 5473)]