20009955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1279}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 36864000

約数和(自身を除く): 16854045

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 149, 447, 745, 1043, 1279, 2235, 3129, 3837, 5215, 6395, 8953, 15645, 19185, 26859, 44765, 134295, 190571, 571713, 952855, 1333997, 2858565, 4001991, 6669985, 20009955]

約数ペア:

[(1, 20009955), (3, 6669985), (5, 4001991), (7, 2858565), (15, 1333997), (21, 952855), (35, 571713), (105, 190571), (149, 134295), (447, 44765), (745, 26859), (1043, 19185), (1279, 15645), (2235, 8953), (3129, 6395), (3837, 5215)]