18251120

素因数分解:

$2^4\times 5^1\times {\mathrm{228139}}^1$

素因数の和:228152

約数の個数: 20

約数和(自身を含む): 42434040

約数和(自身を除く): 24182920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 228139, 456278, 912556, 1140695, 1825112, 2281390, 3650224, 4562780, 9125560, 18251120]

約数ペア:

[(1, 18251120), (2, 9125560), (4, 4562780), (5, 3650224), (8, 2281390), (10, 1825112), (16, 1140695), (20, 912556), (40, 456278), (80, 228139)]