21328804

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{26267}}^1$

素因数の和:26307

約数の個数: 24

約数和(自身を含む): 44130240

約数和(自身を除く): 22801436

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 26267, 52534, 105068, 183869, 367738, 735476, 761743, 1523486, 3046972, 5332201, 10664402, 21328804]

約数ペア:

[(1, 21328804), (2, 10664402), (4, 5332201), (7, 3046972), (14, 1523486), (28, 761743), (29, 735476), (58, 367738), (116, 183869), (203, 105068), (406, 52534), (812, 26267)]