20717895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{409}}^1$

素因数の和:735

約数の個数: 32

約数和(自身を含む): 36368640

約数和(自身を除く): 15650745

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 307, 409, 921, 1227, 1535, 2045, 3377, 4499, 4605, 6135, 10131, 13497, 16885, 22495, 50655, 67485, 125563, 376689, 627815, 1381193, 1883445, 4143579, 6905965, 20717895]

約数ペア:

[(1, 20717895), (3, 6905965), (5, 4143579), (11, 1883445), (15, 1381193), (33, 627815), (55, 376689), (165, 125563), (307, 67485), (409, 50655), (921, 22495), (1227, 16885), (1535, 13497), (2045, 10131), (3377, 6135), (4499, 4605)]