61685420

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{22189}}^1$

素因数の和:22337

約数の個数: 24

約数和(自身を含む): 130477200

約数和(自身を除く): 68791780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 22189, 44378, 88756, 110945, 221890, 443780, 3084271, 6168542, 12337084, 15421355, 30842710, 61685420]

約数ペア:

[(1, 61685420), (2, 30842710), (4, 15421355), (5, 12337084), (10, 6168542), (20, 3084271), (139, 443780), (278, 221890), (556, 110945), (695, 88756), (1390, 44378), (2780, 22189)]