19940570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{977}}^1$

素因数の和:1154

約数の個数: 32

約数和(自身を含む): 38940048

約数和(自身を除く): 18999478

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 977, 1570, 1954, 2041, 4082, 4885, 9770, 10205, 12701, 20410, 25402, 63505, 127010, 153389, 306778, 766945, 1533890, 1994057, 3988114, 9970285, 19940570]

約数ペア:

[(1, 19940570), (2, 9970285), (5, 3988114), (10, 1994057), (13, 1533890), (26, 766945), (65, 306778), (130, 153389), (157, 127010), (314, 63505), (785, 25402), (977, 20410), (1570, 12701), (1954, 10205), (2041, 9770), (4082, 4885)]