20506990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{41851}}^1$

素因数の和:41872

約数の個数: 24

約数和(自身を含む): 42940152

約数和(自身を除く): 22433162

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 41851, 83702, 209255, 292957, 418510, 585914, 1464785, 2050699, 2929570, 4101398, 10253495, 20506990]

約数ペア:

[(1, 20506990), (2, 10253495), (5, 4101398), (7, 2929570), (10, 2050699), (14, 1464785), (35, 585914), (49, 418510), (70, 292957), (98, 209255), (245, 83702), (490, 41851)]