639748052

素因数分解:

$2^2\times {\mathrm{359}}^1\times {\mathrm{445507}}^1$

素因数の和:445870

約数の個数: 12

約数和(自身を含む): 1122680160

約数和(自身を除く): 482932108

約数列:

[1, 2, 4, 359, 718, 1436, 445507, 891014, 1782028, 159937013, 319874026, 639748052]

約数ペア:

[(1, 639748052), (2, 319874026), (4, 159937013), (359, 1782028), (718, 891014), (1436, 445507)]