728720

素因数分解:

$2^4\times 5^1\times {\mathrm{9109}}^1$

素因数の和:9122

約数の個数: 20

約数和(自身を含む): 1694460

約数和(自身を除く): 965740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9109, 18218, 36436, 45545, 72872, 91090, 145744, 182180, 364360, 728720]

約数ペア:

[(1, 728720), (2, 364360), (4, 182180), (5, 145744), (8, 91090), (10, 72872), (16, 45545), (20, 36436), (40, 18218), (80, 9109)]