72118840

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{3911}}^1$

素因数の和:4383

約数の個数: 32

約数和(自身を含む): 162660960

約数和(自身を除く): 90542120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 3911, 4610, 7822, 9220, 15644, 18440, 19555, 31288, 39110, 78220, 156440, 1802971, 3605942, 7211884, 9014855, 14423768, 18029710, 36059420, 72118840]

約数ペア:

[(1, 72118840), (2, 36059420), (4, 18029710), (5, 14423768), (8, 9014855), (10, 7211884), (20, 3605942), (40, 1802971), (461, 156440), (922, 78220), (1844, 39110), (2305, 31288), (3688, 19555), (3911, 18440), (4610, 15644), (7822, 9220)]