21122871

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13063}}^1$

素因数の和:13091

約数の個数: 24

約数和(自身を含む): 35743104

約数和(自身を除く): 14620233

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13063, 39189, 91441, 143693, 274323, 431079, 640087, 1005851, 1920261, 3017553, 7040957, 21122871]

約数ペア:

[(1, 21122871), (3, 7040957), (7, 3017553), (11, 1920261), (21, 1005851), (33, 640087), (49, 431079), (77, 274323), (147, 143693), (231, 91441), (539, 39189), (1617, 13063)]