388913680

素因数分解:

$2^4\times 5^1\times {\mathrm{4861421}}^1$

素因数の和:4861434

約数の個数: 20

約数和(自身を含む): 904224492

約数和(自身を除く): 515310812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4861421, 9722842, 19445684, 24307105, 38891368, 48614210, 77782736, 97228420, 194456840, 388913680]

約数ペア:

[(1, 388913680), (2, 194456840), (4, 97228420), (5, 77782736), (8, 48614210), (10, 38891368), (16, 24307105), (20, 19445684), (40, 9722842), (80, 4861421)]