20987174

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11369}}^1$

素因数の和:11455

約数の個数: 16

約数和(自身を含む): 34382880

約数和(自身を除く): 13395706

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11369, 22738, 147797, 295594, 807199, 1614398, 10493587, 20987174]

約数ペア:

[(1, 20987174), (2, 10493587), (13, 1614398), (26, 807199), (71, 295594), (142, 147797), (923, 22738), (1846, 11369)]