21223671

素因数分解:

$3^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1231}}^1$

素因数の和:2062

約数の個数: 16

約数和(自身を含む): 32406528

約数和(自身を除く): 11182857

約数列:

[1, 3, 7, 21, 821, 1231, 2463, 3693, 5747, 8617, 17241, 25851, 1010651, 3031953, 7074557, 21223671]

約数ペア:

[(1, 21223671), (3, 7074557), (7, 3031953), (21, 1010651), (821, 25851), (1231, 17241), (2463, 8617), (3693, 5747)]