81663490

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{115019}}^1$

素因数の和:115097

約数の個数: 16

約数和(自身を含む): 149065920

約数和(自身を除く): 67402430

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 115019, 230038, 575095, 1150190, 8166349, 16332698, 40831745, 81663490]

約数ペア:

[(1, 81663490), (2, 40831745), (5, 16332698), (10, 8166349), (71, 1150190), (142, 575095), (355, 230038), (710, 115019)]