19765360

素因数分解:

$2^4\times 5^1\times {\mathrm{247067}}^1$

素因数の和:247080

約数の個数: 20

約数和(自身を含む): 45954648

約数和(自身を除く): 26189288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247067, 494134, 988268, 1235335, 1976536, 2470670, 3953072, 4941340, 9882680, 19765360]

約数ペア:

[(1, 19765360), (2, 9882680), (4, 4941340), (5, 3953072), (8, 2470670), (10, 1976536), (16, 1235335), (20, 988268), (40, 494134), (80, 247067)]