20032180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20441}}^1$

素因数の和:20464

約数の個数: 36

約数和(自身を含む): 48938148

約数和(自身を除く): 28905968

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20441, 40882, 81764, 102205, 143087, 204410, 286174, 408820, 572348, 715435, 1001609, 1430870, 2003218, 2861740, 4006436, 5008045, 10016090, 20032180]

約数ペア:

[(1, 20032180), (2, 10016090), (4, 5008045), (5, 4006436), (7, 2861740), (10, 2003218), (14, 1430870), (20, 1001609), (28, 715435), (35, 572348), (49, 408820), (70, 286174), (98, 204410), (140, 143087), (196, 102205), (245, 81764), (490, 40882), (980, 20441)]