20927655

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9491}}^1$

素因数の和:9516

約数の個数: 36

約数和(自身を含む): 42201432

約数和(自身を除く): 21273777

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9491, 28473, 47455, 66437, 85419, 142365, 199311, 332185, 427095, 465059, 597933, 996555, 1395177, 2325295, 2989665, 4185531, 6975885, 20927655]

約数ペア:

[(1, 20927655), (3, 6975885), (5, 4185531), (7, 2989665), (9, 2325295), (15, 1395177), (21, 996555), (35, 597933), (45, 465059), (49, 427095), (63, 332185), (105, 199311), (147, 142365), (245, 85419), (315, 66437), (441, 47455), (735, 28473), (2205, 9491)]