20891679

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{2281}}^1$

素因数の和:2398

約数の個数: 16

約数和(自身を含む): 28917504

約数和(自身を除く): 8025825

約数列:

[1, 3, 43, 71, 129, 213, 2281, 3053, 6843, 9159, 98083, 161951, 294249, 485853, 6963893, 20891679]

約数ペア:

[(1, 20891679), (3, 6963893), (43, 485853), (71, 294249), (129, 161951), (213, 98083), (2281, 9159), (3053, 6843)]