28777720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10133}}^1$

素因数の和:10215

約数の個数: 32

約数和(自身を含む): 65668320

約数和(自身を除く): 36890600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 10133, 20266, 40532, 50665, 81064, 101330, 202660, 405320, 719443, 1438886, 2877772, 3597215, 5755544, 7194430, 14388860, 28777720]

約数ペア:

[(1, 28777720), (2, 14388860), (4, 7194430), (5, 5755544), (8, 3597215), (10, 2877772), (20, 1438886), (40, 719443), (71, 405320), (142, 202660), (284, 101330), (355, 81064), (568, 50665), (710, 40532), (1420, 20266), (2840, 10133)]