15921289640

素因数分解:

$2^3\times 5^1\times {\mathrm{398032241}}^1$

素因数の和:398032252

約数の個数: 16

約数和(自身を含む): 35822901780

約数和(自身を除く): 19901612140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 398032241, 796064482, 1592128964, 1990161205, 3184257928, 3980322410, 7960644820, 15921289640]

約数ペア:

[(1, 15921289640), (2, 7960644820), (4, 3980322410), (5, 3184257928), (8, 1990161205), (10, 1592128964), (20, 796064482), (40, 398032241)]