21386578

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:426

約数の個数: 24

約数和(自身を含む): 34438032

約数和(自身を除く): 13051454

約数列:

[1, 2, 17, 34, 163, 227, 289, 326, 454, 578, 2771, 3859, 5542, 7718, 37001, 47107, 65603, 74002, 94214, 131206, 629017, 1258034, 10693289, 21386578]

約数ペア:

[(1, 21386578), (2, 10693289), (17, 1258034), (34, 629017), (163, 131206), (227, 94214), (289, 74002), (326, 65603), (454, 47107), (578, 37001), (2771, 7718), (3859, 5542)]