20989850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{59971}}^1$

素因数の和:59990

約数の個数: 24

約数和(自身を含む): 44619168

約数和(自身を除く): 23629318

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 350, 59971, 119942, 299855, 419797, 599710, 839594, 1499275, 2098985, 2998550, 4197970, 10494925, 20989850]

約数ペア:

[(1, 20989850), (2, 10494925), (5, 4197970), (7, 2998550), (10, 2098985), (14, 1499275), (25, 839594), (35, 599710), (50, 419797), (70, 299855), (175, 119942), (350, 59971)]