128512881

素因数分解:

$3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{5087}}^1$

素因数の和:5501

約数の個数: 24

約数和(自身を含む): 212719104

約数和(自身を除く): 84206223

約数列:

[1, 3, 7, 9, 21, 63, 401, 1203, 2807, 3609, 5087, 8421, 15261, 25263, 35609, 45783, 106827, 320481, 2039887, 6119661, 14279209, 18358983, 42837627, 128512881]

約数ペア:

[(1, 128512881), (3, 42837627), (7, 18358983), (9, 14279209), (21, 6119661), (63, 2039887), (401, 320481), (1203, 106827), (2807, 45783), (3609, 35609), (5087, 25263), (8421, 15261)]