89090090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{701}}^1$

素因数の和:958

約数の個数: 32

約数和(自身を含む): 163762560

約数和(自身を除く): 74672470

約数列:

[1, 2, 5, 10, 71, 142, 179, 355, 358, 701, 710, 895, 1402, 1790, 3505, 7010, 12709, 25418, 49771, 63545, 99542, 125479, 127090, 248855, 250958, 497710, 627395, 1254790, 8909009, 17818018, 44545045, 89090090]

約数ペア:

[(1, 89090090), (2, 44545045), (5, 17818018), (10, 8909009), (71, 1254790), (142, 627395), (179, 497710), (355, 250958), (358, 248855), (701, 127090), (710, 125479), (895, 99542), (1402, 63545), (1790, 49771), (3505, 25418), (7010, 12709)]