21140763

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1523}}^1$

素因数の和:2194

約数の個数: 16

約数和(自身を含む): 32284416

約数和(自身を除く): 11143653

約数列:

[1, 3, 7, 21, 661, 1523, 1983, 4569, 4627, 10661, 13881, 31983, 1006703, 3020109, 7046921, 21140763]

約数ペア:

[(1, 21140763), (3, 7046921), (7, 3020109), (21, 1006703), (661, 31983), (1523, 13881), (1983, 10661), (4569, 4627)]