27891280

素因数分解:

$2^4\times 5^1\times {\mathrm{443}}^1\times {\mathrm{787}}^1$

素因数の和:1243

約数の個数: 40

約数和(自身を含む): 65076192

約数和(自身を除く): 37184912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 443, 787, 886, 1574, 1772, 2215, 3148, 3544, 3935, 4430, 6296, 7088, 7870, 8860, 12592, 15740, 17720, 31480, 35440, 62960, 348641, 697282, 1394564, 1743205, 2789128, 3486410, 5578256, 6972820, 13945640, 27891280]

約数ペア:

[(1, 27891280), (2, 13945640), (4, 6972820), (5, 5578256), (8, 3486410), (10, 2789128), (16, 1743205), (20, 1394564), (40, 697282), (80, 348641), (443, 62960), (787, 35440), (886, 31480), (1574, 17720), (1772, 15740), (2215, 12592), (3148, 8860), (3544, 7870), (3935, 7088), (4430, 6296)]