87984790

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{20899}}^1$

素因数の和:21327

約数の個数: 16

約数和(自身を含む): 158756400

約数和(自身を除く): 70771610

約数列:

[1, 2, 5, 10, 421, 842, 2105, 4210, 20899, 41798, 104495, 208990, 8798479, 17596958, 43992395, 87984790]

約数ペア:

[(1, 87984790), (2, 43992395), (5, 17596958), (10, 8798479), (421, 208990), (842, 104495), (2105, 41798), (4210, 20899)]