20545760

素因数分解:

$2^5\times 5^1\times {\mathrm{128411}}^1$

素因数の和:128426

約数の個数: 24

約数和(自身を含む): 48539736

約数和(自身を除く): 27993976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128411, 256822, 513644, 642055, 1027288, 1284110, 2054576, 2568220, 4109152, 5136440, 10272880, 20545760]

約数ペア:

[(1, 20545760), (2, 10272880), (4, 5136440), (5, 4109152), (8, 2568220), (10, 2054576), (16, 1284110), (20, 1027288), (32, 642055), (40, 513644), (80, 256822), (160, 128411)]