21266456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156371}}^1$

素因数の和:156394

約数の個数: 16

約数和(自身を含む): 42220440

約数和(自身を除く): 20953984

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156371, 312742, 625484, 1250968, 2658307, 5316614, 10633228, 21266456]

約数ペア:

[(1, 21266456), (2, 10633228), (4, 5316614), (8, 2658307), (17, 1250968), (34, 625484), (68, 312742), (136, 156371)]