1321697420

素因数分解:

$2^2\times 5^1\times {\mathrm{10181}}^1\times {\mathrm{6491}}^1$

素因数の和:16681

約数の個数: 24

約数和(自身を含む): 2776264848

約数和(自身を除く): 1454567428

約数列:

[1, 2, 4, 5, 10, 20, 6491, 10181, 12982, 20362, 25964, 32455, 40724, 50905, 64910, 101810, 129820, 203620, 66084871, 132169742, 264339484, 330424355, 660848710, 1321697420]

約数ペア:

[(1, 1321697420), (2, 660848710), (4, 330424355), (5, 264339484), (10, 132169742), (20, 66084871), (6491, 203620), (10181, 129820), (12982, 101810), (20362, 64910), (25964, 50905), (32455, 40724)]