21018711637

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{409}}^1\times {\mathrm{2659}}^1$

素因数の和:3337

約数の個数: 32

約数和(自身を含む): 26383795200

約数和(自身を除く): 5365083563

約数列:

[1, 7, 11, 77, 251, 409, 1757, 2659, 2761, 2863, 4499, 18613, 19327, 29249, 31493, 102659, 204743, 667409, 718613, 1087531, 1129249, 4671863, 7341499, 7612717, 7904743, 11962841, 51390493, 83739887, 272970281, 1910791967, 3002673091, 21018711637]

約数ペア:

[(1, 21018711637), (7, 3002673091), (11, 1910791967), (77, 272970281), (251, 83739887), (409, 51390493), (1757, 11962841), (2659, 7904743), (2761, 7612717), (2863, 7341499), (4499, 4671863), (18613, 1129249), (19327, 1087531), (29249, 718613), (31493, 667409), (102659, 204743)]