21059656

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49669}}^1$

素因数の和:49728

約数の個数: 16

約数和(自身を含む): 40232700

約数和(自身を除く): 19173044

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49669, 99338, 198676, 397352, 2632457, 5264914, 10529828, 21059656]

約数ペア:

[(1, 21059656), (2, 10529828), (4, 5264914), (8, 2632457), (53, 397352), (106, 198676), (212, 99338), (424, 49669)]