289808720

素因数分解:

$2^4\times 5^1\times {\mathrm{3622609}}^1$

素因数の和:3622622

約数の個数: 20

約数和(自身を含む): 673805460

約数和(自身を除く): 383996740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3622609, 7245218, 14490436, 18113045, 28980872, 36226090, 57961744, 72452180, 144904360, 289808720]

約数ペア:

[(1, 289808720), (2, 144904360), (4, 72452180), (5, 57961744), (8, 36226090), (10, 28980872), (16, 18113045), (20, 14490436), (40, 7245218), (80, 3622609)]