78638180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{701}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 169827840

約数和(自身を除く): 91189660

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 284, 316, 355, 395, 701, 710, 790, 1402, 1420, 1580, 2804, 3505, 5609, 7010, 11218, 14020, 22436, 28045, 49771, 55379, 56090, 99542, 110758, 112180, 199084, 221516, 248855, 276895, 497710, 553790, 995420, 1107580, 3931909, 7863818, 15727636, 19659545, 39319090, 78638180]

約数ペア:

[(1, 78638180), (2, 39319090), (4, 19659545), (5, 15727636), (10, 7863818), (20, 3931909), (71, 1107580), (79, 995420), (142, 553790), (158, 497710), (284, 276895), (316, 248855), (355, 221516), (395, 199084), (701, 112180), (710, 110758), (790, 99542), (1402, 56090), (1420, 55379), (1580, 49771), (2804, 28045), (3505, 22436), (5609, 14020), (7010, 11218)]