39881140

素因数分解:

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

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 90860112

約数和(自身を除く): 50978972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 628, 785, 977, 1570, 1954, 2041, 3140, 3908, 4082, 4885, 8164, 9770, 10205, 12701, 19540, 20410, 25402, 40820, 50804, 63505, 127010, 153389, 254020, 306778, 613556, 766945, 1533890, 1994057, 3067780, 3988114, 7976228, 9970285, 19940570, 39881140]

約数ペア:

[(1, 39881140), (2, 19940570), (4, 9970285), (5, 7976228), (10, 3988114), (13, 3067780), (20, 1994057), (26, 1533890), (52, 766945), (65, 613556), (130, 306778), (157, 254020), (260, 153389), (314, 127010), (628, 63505), (785, 50804), (977, 40820), (1570, 25402), (1954, 20410), (2041, 19540), (3140, 12701), (3908, 10205), (4082, 9770), (4885, 8164)]