778857980

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1\times {\mathrm{1283}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 1656668160

約数和(自身を除く): 877810180

約数列:

[1, 2, 4, 5, 10, 20, 127, 239, 254, 478, 508, 635, 956, 1195, 1270, 1283, 2390, 2540, 2566, 4780, 5132, 6415, 12830, 25660, 30353, 60706, 121412, 151765, 162941, 303530, 306637, 325882, 607060, 613274, 651764, 814705, 1226548, 1533185, 1629410, 3066370, 3258820, 6132740, 38942899, 77885798, 155771596, 194714495, 389428990, 778857980]

約数ペア:

[(1, 778857980), (2, 389428990), (4, 194714495), (5, 155771596), (10, 77885798), (20, 38942899), (127, 6132740), (239, 3258820), (254, 3066370), (478, 1629410), (508, 1533185), (635, 1226548), (956, 814705), (1195, 651764), (1270, 613274), (1283, 607060), (2390, 325882), (2540, 306637), (2566, 303530), (4780, 162941), (5132, 151765), (6415, 121412), (12830, 60706), (25660, 30353)]