129355640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{31397}}^1$

素因数の和:31511

約数の個数: 32

約数和(自身を含む): 293885280

約数和(自身を除く): 164529640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 31397, 62794, 125588, 156985, 251176, 313970, 627940, 1255880, 3233891, 6467782, 12935564, 16169455, 25871128, 32338910, 64677820, 129355640]

約数ペア:

[(1, 129355640), (2, 64677820), (4, 32338910), (5, 25871128), (8, 16169455), (10, 12935564), (20, 6467782), (40, 3233891), (103, 1255880), (206, 627940), (412, 313970), (515, 251176), (824, 156985), (1030, 125588), (2060, 62794), (4120, 31397)]