21305050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:547

約数の個数: 48

約数和(自身を含む): 43356600

約数和(自身を除く): 22051550

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 449, 650, 730, 898, 949, 1825, 1898, 2245, 3650, 4490, 4745, 5837, 9490, 11225, 11674, 22450, 23725, 29185, 32777, 47450, 58370, 65554, 145925, 163885, 291850, 327770, 426101, 819425, 852202, 1638850, 2130505, 4261010, 10652525, 21305050]

約数ペア:

[(1, 21305050), (2, 10652525), (5, 4261010), (10, 2130505), (13, 1638850), (25, 852202), (26, 819425), (50, 426101), (65, 327770), (73, 291850), (130, 163885), (146, 145925), (325, 65554), (365, 58370), (449, 47450), (650, 32777), (730, 29185), (898, 23725), (949, 22450), (1825, 11674), (1898, 11225), (2245, 9490), (3650, 5837), (4490, 4745)]