18900155

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 24670512

約数和(自身を除く): 5770357

約数列:

[1, 5, 19, 37, 95, 185, 283, 361, 703, 1415, 1805, 3515, 5377, 10471, 13357, 26885, 52355, 66785, 102163, 198949, 510815, 994745, 3780031, 18900155]

約数ペア:

[(1, 18900155), (5, 3780031), (19, 994745), (37, 510815), (95, 198949), (185, 102163), (283, 66785), (361, 52355), (703, 26885), (1415, 13357), (1805, 10471), (3515, 5377)]