20578180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{146987}}^1$

素因数の和:147003

約数の個数: 24

約数和(自身を含む): 49387968

約数和(自身を除く): 28809788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 146987, 293974, 587948, 734935, 1028909, 1469870, 2057818, 2939740, 4115636, 5144545, 10289090, 20578180]

約数ペア:

[(1, 20578180), (2, 10289090), (4, 5144545), (5, 4115636), (7, 2939740), (10, 2057818), (14, 1469870), (20, 1028909), (28, 734935), (35, 587948), (70, 293974), (140, 146987)]