28171280

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1009}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 65751000

約数和(自身を除く): 37579720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 1009, 1396, 1745, 2018, 2792, 3490, 4036, 5045, 5584, 6980, 8072, 10090, 13960, 16144, 20180, 27920, 40360, 80720, 352141, 704282, 1408564, 1760705, 2817128, 3521410, 5634256, 7042820, 14085640, 28171280]

約数ペア:

[(1, 28171280), (2, 14085640), (4, 7042820), (5, 5634256), (8, 3521410), (10, 2817128), (16, 1760705), (20, 1408564), (40, 704282), (80, 352141), (349, 80720), (698, 40360), (1009, 27920), (1396, 20180), (1745, 16144), (2018, 13960), (2792, 10090), (3490, 8072), (4036, 6980), (5045, 5584)]