21998001

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{743}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8000079

約数列:

[1, 3, 71, 139, 213, 417, 743, 2229, 9869, 29607, 52753, 103277, 158259, 309831, 7332667, 21998001]

約数ペア:

[(1, 21998001), (3, 7332667), (71, 309831), (139, 158259), (213, 103277), (417, 52753), (743, 29607), (2229, 9869)]