16981893

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{6763}}^1$

素因数の和:6806

約数の個数: 20

約数和(自身を含む): 26190208

約数和(自身を除く): 9208315

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 6763, 20289, 60867, 182601, 209653, 547803, 628959, 1886877, 5660631, 16981893]

約数ペア:

[(1, 16981893), (3, 5660631), (9, 1886877), (27, 628959), (31, 547803), (81, 209653), (93, 182601), (279, 60867), (837, 20289), (2511, 6763)]