21325577

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{443}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 27499584

約数和(自身を除く): 6174007

約数列:

[1, 7, 13, 23, 91, 161, 299, 443, 529, 2093, 3101, 3703, 5759, 6877, 10189, 40313, 48139, 71323, 132457, 234347, 927199, 1640429, 3046511, 21325577]

約数ペア:

[(1, 21325577), (7, 3046511), (13, 1640429), (23, 927199), (91, 234347), (161, 132457), (299, 71323), (443, 48139), (529, 40313), (2093, 10189), (3101, 6877), (3703, 5759)]