20787855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7411}}^1$

素因数の和:7447

約数の個数: 32

約数和(自身を含む): 38423808

約数和(自身を除く): 17635953

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7411, 22233, 37055, 81521, 111165, 125987, 244563, 377961, 407605, 629935, 1222815, 1385857, 1889805, 4157571, 6929285, 20787855]

約数ペア:

[(1, 20787855), (3, 6929285), (5, 4157571), (11, 1889805), (15, 1385857), (17, 1222815), (33, 629935), (51, 407605), (55, 377961), (85, 244563), (165, 125987), (187, 111165), (255, 81521), (561, 37055), (935, 22233), (2805, 7411)]