163611640

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{10303}}^1$

素因数の和:10711

約数の個数: 32

約数和(自身を含む): 369089280

約数和(自身を除く): 205477640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 7940, 10303, 15880, 20606, 41212, 51515, 82424, 103030, 206060, 412120, 4090291, 8180582, 16361164, 20451455, 32722328, 40902910, 81805820, 163611640]

約数ペア:

[(1, 163611640), (2, 81805820), (4, 40902910), (5, 32722328), (8, 20451455), (10, 16361164), (20, 8180582), (40, 4090291), (397, 412120), (794, 206060), (1588, 103030), (1985, 82424), (3176, 51515), (3970, 41212), (7940, 20606), (10303, 15880)]