1311280

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 40

約数和(自身を含む): 3138192

約数和(自身を除く): 1826912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 443, 592, 740, 886, 1480, 1772, 2215, 2960, 3544, 4430, 7088, 8860, 16391, 17720, 32782, 35440, 65564, 81955, 131128, 163910, 262256, 327820, 655640, 1311280]

約数ペア:

[(1, 1311280), (2, 655640), (4, 327820), (5, 262256), (8, 163910), (10, 131128), (16, 81955), (20, 65564), (37, 35440), (40, 32782), (74, 17720), (80, 16391), (148, 8860), (185, 7088), (296, 4430), (370, 3544), (443, 2960), (592, 2215), (740, 1772), (886, 1480)]