20288720

素因数分解:

$2^4\times 5^1\times {\mathrm{253609}}^1$

素因数の和:253622

約数の個数: 20

約数和(自身を含む): 47171460

約数和(自身を除く): 26882740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253609, 507218, 1014436, 1268045, 2028872, 2536090, 4057744, 5072180, 10144360, 20288720]

約数ペア:

[(1, 20288720), (2, 10144360), (4, 5072180), (5, 4057744), (8, 2536090), (10, 2028872), (16, 1268045), (20, 1014436), (40, 507218), (80, 253609)]