20766736

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5171}}^1$

素因数の和:5430

約数の個数: 20

約数和(自身を含む): 40403664

約数和(自身を除く): 19636928

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5171, 10342, 20684, 41368, 82736, 1297921, 2595842, 5191684, 10383368, 20766736]

約数ペア:

[(1, 20766736), (2, 10383368), (4, 5191684), (8, 2595842), (16, 1297921), (251, 82736), (502, 41368), (1004, 20684), (2008, 10342), (4016, 5171)]