165169640

素因数分解:

$2^3\times 5^1\times {\mathrm{4129241}}^1$

素因数の和:4129252

約数の個数: 16

約数和(自身を含む): 371631780

約数和(自身を除く): 206462140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4129241, 8258482, 16516964, 20646205, 33033928, 41292410, 82584820, 165169640]

約数ペア:

[(1, 165169640), (2, 82584820), (4, 41292410), (5, 33033928), (8, 20646205), (10, 16516964), (20, 8258482), (40, 4129241)]