21307858

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{521}}^1$

素因数の和:571

約数の個数: 36

約数和(自身を含む): 38114874

約数和(自身を除く): 16807016

約数列:

[1, 2, 11, 13, 22, 26, 121, 143, 169, 242, 286, 338, 521, 1042, 1573, 1859, 3146, 3718, 5731, 6773, 11462, 13546, 20449, 40898, 63041, 74503, 88049, 126082, 149006, 176098, 819533, 968539, 1639066, 1937078, 10653929, 21307858]

約数ペア:

[(1, 21307858), (2, 10653929), (11, 1937078), (13, 1639066), (22, 968539), (26, 819533), (121, 176098), (143, 149006), (169, 126082), (242, 88049), (286, 74503), (338, 63041), (521, 40898), (1042, 20449), (1573, 13546), (1859, 11462), (3146, 6773), (3718, 5731)]