19720270

素因数分解:

$2^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{11399}}^1$

素因数の和:11579

約数の個数: 16

約数和(自身を含む): 35704800

約数和(自身を除く): 15984530

約数列:

[1, 2, 5, 10, 173, 346, 865, 1730, 11399, 22798, 56995, 113990, 1972027, 3944054, 9860135, 19720270]

約数ペア:

[(1, 19720270), (2, 9860135), (5, 3944054), (10, 1972027), (173, 113990), (346, 56995), (865, 22798), (1730, 11399)]