21395728

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16927}}^1$

素因数の和:17014

約数の個数: 20

約数和(自身を含む): 41981440

約数和(自身を除く): 20585712

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16927, 33854, 67708, 135416, 270832, 1337233, 2674466, 5348932, 10697864, 21395728]

約数ペア:

[(1, 21395728), (2, 10697864), (4, 5348932), (8, 2674466), (16, 1337233), (79, 270832), (158, 135416), (316, 67708), (632, 33854), (1264, 16927)]