18938990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{38651}}^1$

素因数の和:38672

約数の個数: 24

約数和(自身を含む): 39656952

約数和(自身を除く): 20717962

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 38651, 77302, 193255, 270557, 386510, 541114, 1352785, 1893899, 2705570, 3787798, 9469495, 18938990]

約数ペア:

[(1, 18938990), (2, 9469495), (5, 3787798), (7, 2705570), (10, 1893899), (14, 1352785), (35, 541114), (49, 386510), (70, 270557), (98, 193255), (245, 77302), (490, 38651)]