219055960

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{17609}}^1$

素因数の和:17931

約数の個数: 32

約数和(自身を含む): 494488800

約数和(自身を除く): 275432840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 17609, 35218, 70436, 88045, 140872, 176090, 352180, 704360, 5476399, 10952798, 21905596, 27381995, 43811192, 54763990, 109527980, 219055960]

約数ペア:

[(1, 219055960), (2, 109527980), (4, 54763990), (5, 43811192), (8, 27381995), (10, 21905596), (20, 10952798), (40, 5476399), (311, 704360), (622, 352180), (1244, 176090), (1555, 140872), (2488, 88045), (3110, 70436), (6220, 35218), (12440, 17609)]