20018951

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:398

約数の個数: 16

約数和(自身を含む): 21859200

約数和(自身を除く): 1840249

約数列:

[1, 19, 43, 107, 229, 817, 2033, 4351, 4601, 9847, 24503, 87419, 187093, 465557, 1053629, 20018951]

約数ペア:

[(1, 20018951), (19, 1053629), (43, 465557), (107, 187093), (229, 87419), (817, 24503), (2033, 9847), (4351, 4601)]