128423420

素因数分解:

$2^2\times 5^1\times {\mathrm{739}}^1\times {\mathrm{8689}}^1$

素因数の和:9437

約数の個数: 24

約数和(自身を含む): 270085200

約数和(自身を除く): 141661780

約数列:

[1, 2, 4, 5, 10, 20, 739, 1478, 2956, 3695, 7390, 8689, 14780, 17378, 34756, 43445, 86890, 173780, 6421171, 12842342, 25684684, 32105855, 64211710, 128423420]

約数ペア:

[(1, 128423420), (2, 64211710), (4, 32105855), (5, 25684684), (10, 12842342), (20, 6421171), (739, 173780), (1478, 86890), (2956, 43445), (3695, 34756), (7390, 17378), (8689, 14780)]