21655472

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20201}}^1$

素因数の和:20276

約数の個数: 20

約数和(自身を含む): 42585816

約数和(自身を除く): 20930344

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20201, 40402, 80804, 161608, 323216, 1353467, 2706934, 5413868, 10827736, 21655472]

約数ペア:

[(1, 21655472), (2, 10827736), (4, 5413868), (8, 2706934), (16, 1353467), (67, 323216), (134, 161608), (268, 80804), (536, 40402), (1072, 20201)]