21148827

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7351}}^1$

素因数の和:7498

約数の個数: 16

約数和(自身を含む): 32466432

約数和(自身を除く): 11317605

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7351, 22053, 51457, 154371, 1007087, 3021261, 7049609, 21148827]

約数ペア:

[(1, 21148827), (3, 7049609), (7, 3021261), (21, 1007087), (137, 154371), (411, 51457), (959, 22053), (2877, 7351)]