20589765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1249}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 37920000

約数和(自身を除く): 17330235

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1249, 2355, 3297, 3747, 5495, 6245, 8743, 16485, 18735, 26229, 43715, 131145, 196093, 588279, 980465, 1372651, 2941395, 4117953, 6863255, 20589765]

約数ペア:

[(1, 20589765), (3, 6863255), (5, 4117953), (7, 2941395), (15, 1372651), (21, 980465), (35, 588279), (105, 196093), (157, 131145), (471, 43715), (785, 26229), (1099, 18735), (1249, 16485), (2355, 8743), (3297, 6245), (3747, 5495)]