490906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:333

約数の個数: 16

約数和(自身を含む): 806400

約数和(自身を除く): 315494

約数列:

[1, 2, 13, 26, 79, 158, 239, 478, 1027, 2054, 3107, 6214, 18881, 37762, 245453, 490906]

約数ペア:

[(1, 490906), (2, 245453), (13, 37762), (26, 18881), (79, 6214), (158, 3107), (239, 2054), (478, 1027)]