2120740

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{991}}^1$

素因数の和:1107

約数の個数: 24

約数和(自身を含む): 4499712

約数和(自身を除く): 2378972

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 991, 1070, 1982, 2140, 3964, 4955, 9910, 19820, 106037, 212074, 424148, 530185, 1060370, 2120740]

約数ペア:

[(1, 2120740), (2, 1060370), (4, 530185), (5, 424148), (10, 212074), (20, 106037), (107, 19820), (214, 9910), (428, 4955), (535, 3964), (991, 2140), (1070, 1982)]