201020180

素因数分解:

$2^2\times 5^1\times {\mathrm{2129}}^1\times {\mathrm{4721}}^1$

素因数の和:6859

約数の個数: 24

約数和(自身を含む): 422430120

約数和(自身を除く): 221409940

約数列:

[1, 2, 4, 5, 10, 20, 2129, 4258, 4721, 8516, 9442, 10645, 18884, 21290, 23605, 42580, 47210, 94420, 10051009, 20102018, 40204036, 50255045, 100510090, 201020180]

約数ペア:

[(1, 201020180), (2, 100510090), (4, 50255045), (5, 40204036), (10, 20102018), (20, 10051009), (2129, 94420), (4258, 47210), (4721, 42580), (8516, 23605), (9442, 21290), (10645, 18884)]