21024620

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2141}}^1$

素因数の和:2641

約数の個数: 24

約数和(自身を含む): 44262288

約数和(自身を除く): 23237668

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2141, 2455, 4282, 4910, 8564, 9820, 10705, 21410, 42820, 1051231, 2102462, 4204924, 5256155, 10512310, 21024620]

約数ペア:

[(1, 21024620), (2, 10512310), (4, 5256155), (5, 4204924), (10, 2102462), (20, 1051231), (491, 42820), (982, 21410), (1964, 10705), (2141, 9820), (2455, 8564), (4282, 4910)]