639852479

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{67}}^1\times {\mathrm{2579}}^1$

素因数の和:2699

約数の個数: 24

約数和(自身を含む): 776146560

約数和(自身を除く): 136294081

約数列:

[1, 7, 23, 67, 161, 469, 529, 1541, 2579, 3703, 10787, 18053, 35443, 59317, 172793, 248101, 415219, 1209551, 1364291, 3974239, 9550037, 27819673, 91407497, 639852479]

約数ペア:

[(1, 639852479), (7, 91407497), (23, 27819673), (67, 9550037), (161, 3974239), (469, 1364291), (529, 1209551), (1541, 415219), (2579, 248101), (3703, 172793), (10787, 59317), (18053, 35443)]