811782020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{828349}}^1$

素因数の和:828372

約数の個数: 36

約数和(自身を含む): 1983069900

約数和(自身を除く): 1171287880

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 828349, 1656698, 3313396, 4141745, 5798443, 8283490, 11596886, 16566980, 23193772, 28992215, 40589101, 57984430, 81178202, 115968860, 162356404, 202945505, 405891010, 811782020]

約数ペア:

[(1, 811782020), (2, 405891010), (4, 202945505), (5, 162356404), (7, 115968860), (10, 81178202), (14, 57984430), (20, 40589101), (28, 28992215), (35, 23193772), (49, 16566980), (70, 11596886), (98, 8283490), (140, 5798443), (196, 4141745), (245, 3313396), (490, 1656698), (980, 828349)]