64282220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103681}}^1$

素因数の和:103721

約数の個数: 24

約数和(自身を含む): 139348608

約数和(自身を除く): 75066388

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 103681, 207362, 414724, 518405, 1036810, 2073620, 3214111, 6428222, 12856444, 16070555, 32141110, 64282220]

約数ペア:

[(1, 64282220), (2, 32141110), (4, 16070555), (5, 12856444), (10, 6428222), (20, 3214111), (31, 2073620), (62, 1036810), (124, 518405), (155, 414724), (310, 207362), (620, 103681)]