18004415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{149}}^1$

素因数の和:204

約数の個数: 32

約数和(自身を含む): 25704000

約数和(自身を除く): 7699585

約数列:

[1, 5, 11, 13, 55, 65, 143, 149, 169, 715, 745, 845, 1639, 1859, 1937, 2197, 8195, 9295, 9685, 10985, 21307, 24167, 25181, 106535, 120835, 125905, 276991, 327353, 1384955, 1636765, 3600883, 18004415]

約数ペア:

[(1, 18004415), (5, 3600883), (11, 1636765), (13, 1384955), (55, 327353), (65, 276991), (143, 125905), (149, 120835), (169, 106535), (715, 25181), (745, 24167), (845, 21307), (1639, 10985), (1859, 9685), (1937, 9295), (2197, 8195)]