19972491

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{86461}}^1$

素因数の和:86482

約数の個数: 16

約数和(自身を含む): 33201408

約数和(自身を除く): 13228917

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 86461, 259383, 605227, 951071, 1815681, 2853213, 6657497, 19972491]

約数ペア:

[(1, 19972491), (3, 6657497), (7, 2853213), (11, 1815681), (21, 951071), (33, 605227), (77, 259383), (231, 86461)]