20125880

素因数分解:

$2^3\times 5^1\times {\mathrm{503147}}^1$

素因数の和:503158

約数の個数: 16

約数和(自身を含む): 45283320

約数和(自身を除く): 25157440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503147, 1006294, 2012588, 2515735, 4025176, 5031470, 10062940, 20125880]

約数ペア:

[(1, 20125880), (2, 10062940), (4, 5031470), (5, 4025176), (8, 2515735), (10, 2012588), (20, 1006294), (40, 503147)]