21856473

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3251}}^1$

素因数の和:3346

約数の個数: 20

約数和(自身を含む): 33053328

約数和(自身を除く): 11196855

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3251, 6723, 9753, 29259, 87777, 263331, 269833, 809499, 2428497, 7285491, 21856473]

約数ペア:

[(1, 21856473), (3, 7285491), (9, 2428497), (27, 809499), (81, 269833), (83, 263331), (249, 87777), (747, 29259), (2241, 9753), (3251, 6723)]