21000740

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4357}}^1$

素因数の和:4607

約数の個数: 24

約数和(自身を含む): 44294712

約数和(自身を除く): 23293972

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4357, 4820, 8714, 17428, 21785, 43570, 87140, 1050037, 2100074, 4200148, 5250185, 10500370, 21000740]

約数ペア:

[(1, 21000740), (2, 10500370), (4, 5250185), (5, 4200148), (10, 2100074), (20, 1050037), (241, 87140), (482, 43570), (964, 21785), (1205, 17428), (2410, 8714), (4357, 4820)]