399970010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{21773}}^1$

素因数の和:21958

約数の個数: 32

約数和(自身を含む): 790134912

約数和(自身を除く): 390164902

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 167, 334, 835, 1670, 1837, 3674, 9185, 18370, 21773, 43546, 108865, 217730, 239503, 479006, 1197515, 2395030, 3636091, 7272182, 18180455, 36360910, 39997001, 79994002, 199985005, 399970010]

約数ペア:

[(1, 399970010), (2, 199985005), (5, 79994002), (10, 39997001), (11, 36360910), (22, 18180455), (55, 7272182), (110, 3636091), (167, 2395030), (334, 1197515), (835, 479006), (1670, 239503), (1837, 217730), (3674, 108865), (9185, 43546), (18370, 21773)]