12459220

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1091}}^1$

素因数の和:1671

約数の個数: 24

約数和(自身を含む): 26234208

約数和(自身を除く): 13774988

約数列:

[1, 2, 4, 5, 10, 20, 571, 1091, 1142, 2182, 2284, 2855, 4364, 5455, 5710, 10910, 11420, 21820, 622961, 1245922, 2491844, 3114805, 6229610, 12459220]

約数ペア:

[(1, 12459220), (2, 6229610), (4, 3114805), (5, 2491844), (10, 1245922), (20, 622961), (571, 21820), (1091, 11420), (1142, 10910), (2182, 5710), (2284, 5455), (2855, 4364)]