123754420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{87151}}^1$

素因数の和:87231

約数の個数: 24

約数和(自身を含む): 263547648

約数和(自身を除く): 139793228

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 87151, 174302, 348604, 435755, 871510, 1743020, 6187721, 12375442, 24750884, 30938605, 61877210, 123754420]

約数ペア:

[(1, 123754420), (2, 61877210), (4, 30938605), (5, 24750884), (10, 12375442), (20, 6187721), (71, 1743020), (142, 871510), (284, 435755), (355, 348604), (710, 174302), (1420, 87151)]