40890005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{7963}}^1$

素因数の和:8060

約数の個数: 16

約数和(自身を含む): 53518080

約数和(自身を除く): 12628075

約数列:

[1, 5, 13, 65, 79, 395, 1027, 5135, 7963, 39815, 103519, 517595, 629077, 3145385, 8178001, 40890005]

約数ペア:

[(1, 40890005), (5, 8178001), (13, 3145385), (65, 629077), (79, 517595), (395, 103519), (1027, 39815), (5135, 7963)]