20949514

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12821}}^1$

素因数の和:12885

約数の個数: 16

約数和(自身を含む): 33850080

約数和(自身を除く): 12900566

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 12821, 25642, 243599, 487198, 551303, 1102606, 10474757, 20949514]

約数ペア:

[(1, 20949514), (2, 10474757), (19, 1102606), (38, 551303), (43, 487198), (86, 243599), (817, 25642), (1634, 12821)]