21347216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121291}}^1$

素因数の和:121310

約数の個数: 20

約数和(自身を含む): 45120624

約数和(自身を除く): 23773408

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121291, 242582, 485164, 970328, 1334201, 1940656, 2668402, 5336804, 10673608, 21347216]

約数ペア:

[(1, 21347216), (2, 10673608), (4, 5336804), (8, 2668402), (11, 1940656), (16, 1334201), (22, 970328), (44, 485164), (88, 242582), (176, 121291)]