165520720

素因数分解:

$2^4\times 5^1\times {\mathrm{2069009}}^1$

素因数の和:2069022

約数の個数: 20

約数和(自身を含む): 384835860

約数和(自身を除く): 219315140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2069009, 4138018, 8276036, 10345045, 16552072, 20690090, 33104144, 41380180, 82760360, 165520720]

約数ペア:

[(1, 165520720), (2, 82760360), (4, 41380180), (5, 33104144), (8, 20690090), (10, 16552072), (16, 10345045), (20, 8276036), (40, 4138018), (80, 2069009)]