990505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:336

約数の個数: 16

約数和(自身を含む): 1292544

約数和(自身を除く): 302039

約数列:

[1, 5, 17, 43, 85, 215, 271, 731, 1355, 3655, 4607, 11653, 23035, 58265, 198101, 990505]

約数ペア:

[(1, 990505), (5, 198101), (17, 58265), (43, 23035), (85, 11653), (215, 4607), (271, 3655), (731, 1355)]