21333820

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{7159}}^1$

素因数の和:7317

約数の個数: 24

約数和(自身を含む): 45108000

約数和(自身を除く): 23774180

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 7159, 14318, 28636, 35795, 71590, 143180, 1066691, 2133382, 4266764, 5333455, 10666910, 21333820]

約数ペア:

[(1, 21333820), (2, 10666910), (4, 5333455), (5, 4266764), (10, 2133382), (20, 1066691), (149, 143180), (298, 71590), (596, 35795), (745, 28636), (1490, 14318), (2980, 7159)]