19775559

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{409}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 26922240

約数和(自身を除く): 7146681

約数列:

[1, 3, 71, 213, 227, 409, 681, 1227, 16117, 29039, 48351, 87117, 92843, 278529, 6591853, 19775559]

約数ペア:

[(1, 19775559), (3, 6591853), (71, 278529), (213, 92843), (227, 87117), (409, 48351), (681, 29039), (1227, 16117)]