21911265

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 39836160

約数和(自身を除く): 17924895

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 113, 139, 155, 279, 339, 417, 465, 565, 695, 1017, 1251, 1395, 1695, 2085, 3503, 4309, 5085, 6255, 10509, 12927, 15707, 17515, 21545, 31527, 38781, 47121, 52545, 64635, 78535, 141363, 157635, 193905, 235605, 486917, 706815, 1460751, 2434585, 4382253, 7303755, 21911265]

約数ペア:

[(1, 21911265), (3, 7303755), (5, 4382253), (9, 2434585), (15, 1460751), (31, 706815), (45, 486917), (93, 235605), (113, 193905), (139, 157635), (155, 141363), (279, 78535), (339, 64635), (417, 52545), (465, 47121), (565, 38781), (695, 31527), (1017, 21545), (1251, 17515), (1395, 15707), (1695, 12927), (2085, 10509), (3503, 6255), (4309, 5085)]