403910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:272

約数の個数: 24

約数和(自身を含む): 790560

約数和(自身を除く): 386650

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 239, 338, 478, 845, 1195, 1690, 2390, 3107, 6214, 15535, 31070, 40391, 80782, 201955, 403910]

約数ペア:

[(1, 403910), (2, 201955), (5, 80782), (10, 40391), (13, 31070), (26, 15535), (65, 6214), (130, 3107), (169, 2390), (239, 1690), (338, 1195), (478, 845)]