21258811

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:474

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 3578309

約数列:

[1, 7, 97, 131, 239, 679, 917, 1673, 12707, 23183, 31309, 88949, 162281, 219163, 3036973, 21258811]

約数ペア:

[(1, 21258811), (7, 3036973), (97, 219163), (131, 162281), (239, 88949), (679, 31309), (917, 23183), (1673, 12707)]