6399687640

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{403003}}^1$

素因数の和:403411

約数の個数: 32

約数和(自身を含む): 14435603280

約数和(自身を除く): 8035915640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 7940, 15880, 403003, 806006, 1612012, 2015015, 3224024, 4030030, 8060060, 16120120, 159992191, 319984382, 639968764, 799960955, 1279937528, 1599921910, 3199843820, 6399687640]

約数ペア:

[(1, 6399687640), (2, 3199843820), (4, 1599921910), (5, 1279937528), (8, 799960955), (10, 639968764), (20, 319984382), (40, 159992191), (397, 16120120), (794, 8060060), (1588, 4030030), (1985, 3224024), (3176, 2015015), (3970, 1612012), (7940, 806006), (15880, 403003)]