18981656

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{139571}}^1$

素因数の和:139594

約数の個数: 16

約数和(自身を含む): 37684440

約数和(自身を除く): 18702784

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 139571, 279142, 558284, 1116568, 2372707, 4745414, 9490828, 18981656]

約数ペア:

[(1, 18981656), (2, 9490828), (4, 4745414), (8, 2372707), (17, 1116568), (34, 558284), (68, 279142), (136, 139571)]