990535

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 1493856

約数和(自身を除く): 503321

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 311, 455, 637, 1555, 2177, 3185, 4043, 10885, 15239, 20215, 28301, 76195, 141505, 198107, 990535]

約数ペア:

[(1, 990535), (5, 198107), (7, 141505), (13, 76195), (35, 28301), (49, 20215), (65, 15239), (91, 10885), (245, 4043), (311, 3185), (455, 2177), (637, 1555)]