19998777

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1\times {\mathrm{503}}^1$

素因数の和:992

約数の個数: 16

約数和(自身を含む): 27699840

約数和(自身を除く): 7701063

約数列:

[1, 3, 29, 87, 457, 503, 1371, 1509, 13253, 14587, 39759, 43761, 229871, 689613, 6666259, 19998777]

約数ペア:

[(1, 19998777), (3, 6666259), (29, 689613), (87, 229871), (457, 43761), (503, 39759), (1371, 14587), (1509, 13253)]