1311336560

素因数分解:

$2^4\times 5^1\times {\mathrm{16391707}}^1$

素因数の和:16391720

約数の個数: 20

約数和(自身を含む): 3048857688

約数和(自身を除く): 1737521128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16391707, 32783414, 65566828, 81958535, 131133656, 163917070, 262267312, 327834140, 655668280, 1311336560]

約数ペア:

[(1, 1311336560), (2, 655668280), (4, 327834140), (5, 262267312), (8, 163917070), (10, 131133656), (16, 81958535), (20, 65566828), (40, 32783414), (80, 16391707)]