28287920

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3433}}^1$

素因数の和:3549

約数の個数: 40

約数和(自身を含む): 66427296

約数和(自身を除く): 38139376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 3433, 4120, 6866, 8240, 13732, 17165, 27464, 34330, 54928, 68660, 137320, 274640, 353599, 707198, 1414396, 1767995, 2828792, 3535990, 5657584, 7071980, 14143960, 28287920]

約数ペア:

[(1, 28287920), (2, 14143960), (4, 7071980), (5, 5657584), (8, 3535990), (10, 2828792), (16, 1767995), (20, 1414396), (40, 707198), (80, 353599), (103, 274640), (206, 137320), (412, 68660), (515, 54928), (824, 34330), (1030, 27464), (1648, 17165), (2060, 13732), (3433, 8240), (4120, 6866)]