64393990

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{18451}}^1$

素因数の和:18807

約数の個数: 16

約数和(自身を含む): 116247600

約数和(自身を除く): 51853610

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 18451, 36902, 92255, 184510, 6439399, 12878798, 32196995, 64393990]

約数ペア:

[(1, 64393990), (2, 32196995), (5, 12878798), (10, 6439399), (349, 184510), (698, 92255), (1745, 36902), (3490, 18451)]