21062456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154871}}^1$

素因数の和:154894

約数の個数: 16

約数和(自身を含む): 41815440

約数和(自身を除く): 20752984

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154871, 309742, 619484, 1238968, 2632807, 5265614, 10531228, 21062456]

約数ペア:

[(1, 21062456), (2, 10531228), (4, 5265614), (8, 2632807), (17, 1238968), (34, 619484), (68, 309742), (136, 154871)]