168439640

素因数分解:

$2^3\times 5^1\times {\mathrm{1373}}^1\times {\mathrm{3067}}^1$

素因数の和:4451

約数の個数: 32

約数和(自身を含む): 379388880

約数和(自身を除く): 210949240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1373, 2746, 3067, 5492, 6134, 6865, 10984, 12268, 13730, 15335, 24536, 27460, 30670, 54920, 61340, 122680, 4210991, 8421982, 16843964, 21054955, 33687928, 42109910, 84219820, 168439640]

約数ペア:

[(1, 168439640), (2, 84219820), (4, 42109910), (5, 33687928), (8, 21054955), (10, 16843964), (20, 8421982), (40, 4210991), (1373, 122680), (2746, 61340), (3067, 54920), (5492, 30670), (6134, 27460), (6865, 24536), (10984, 15335), (12268, 13730)]