668804979160

素因数分解:

$2^3\times 5^1\times {\mathrm{16720124479}}^1$

素因数の和:16720124490

約数の個数: 16

約数和(自身を含む): 1504811203200

約数和(自身を除く): 836006224040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16720124479, 33440248958, 66880497916, 83600622395, 133760995832, 167201244790, 334402489580, 668804979160]

約数ペア:

[(1, 668804979160), (2, 334402489580), (4, 167201244790), (5, 133760995832), (8, 83600622395), (10, 66880497916), (20, 33440248958), (40, 16720124479)]