661025968

素因数分解:

$2^4\times {\mathrm{2351}}^1\times {\mathrm{17573}}^1$

素因数の和:19932

約数の個数: 20

約数和(自身を含む): 1281355488

約数和(自身を除く): 620329520

約数列:

[1, 2, 4, 8, 16, 2351, 4702, 9404, 17573, 18808, 35146, 37616, 70292, 140584, 281168, 41314123, 82628246, 165256492, 330512984, 661025968]

約数ペア:

[(1, 661025968), (2, 330512984), (4, 165256492), (8, 82628246), (16, 41314123), (2351, 281168), (4702, 140584), (9404, 70292), (17573, 37616), (18808, 35146)]