21820810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{1217}}^1$

素因数の和:1398

約数の個数: 32

約数和(自身を含む): 43146432

約数和(自身を除く): 21325622

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 163, 326, 815, 1217, 1630, 1793, 2434, 3586, 6085, 8965, 12170, 13387, 17930, 26774, 66935, 133870, 198371, 396742, 991855, 1983710, 2182081, 4364162, 10910405, 21820810]

約数ペア:

[(1, 21820810), (2, 10910405), (5, 4364162), (10, 2182081), (11, 1983710), (22, 991855), (55, 396742), (110, 198371), (163, 133870), (326, 66935), (815, 26774), (1217, 17930), (1630, 13387), (1793, 12170), (2434, 8965), (3586, 6085)]