20726735

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{641}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 25885440

約数和(自身を除く): 5158705

約数列:

[1, 5, 29, 145, 223, 641, 1115, 3205, 6467, 18589, 32335, 92945, 142943, 714715, 4145347, 20726735]

約数ペア:

[(1, 20726735), (5, 4145347), (29, 714715), (145, 142943), (223, 92945), (641, 32335), (1115, 18589), (3205, 6467)]