206720420

素因数分解:

$2^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{26987}}^1$

素因数の和:27379

約数の個数: 24

約数和(自身を含む): 435262464

約数和(自身を除く): 228542044

約数列:

[1, 2, 4, 5, 10, 20, 383, 766, 1532, 1915, 3830, 7660, 26987, 53974, 107948, 134935, 269870, 539740, 10336021, 20672042, 41344084, 51680105, 103360210, 206720420]

約数ペア:

[(1, 206720420), (2, 103360210), (4, 51680105), (5, 41344084), (10, 20672042), (20, 10336021), (383, 539740), (766, 269870), (1532, 134935), (1915, 107948), (3830, 53974), (7660, 26987)]