30685420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{17239}}^1$

素因数の和:17337

約数の個数: 24

約数和(自身を含む): 65167200

約数和(自身を除く): 34481780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 17239, 34478, 68956, 86195, 172390, 344780, 1534271, 3068542, 6137084, 7671355, 15342710, 30685420]

約数ペア:

[(1, 30685420), (2, 15342710), (4, 7671355), (5, 6137084), (10, 3068542), (20, 1534271), (89, 344780), (178, 172390), (356, 86195), (445, 68956), (890, 34478), (1780, 17239)]