21568880

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5087}}^1$

素因数の和:5153

約数の個数: 40

約数和(自身を含む): 51103872

約数和(自身を除く): 29534992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5087, 10174, 20348, 25435, 40696, 50870, 81392, 101740, 203480, 269611, 406960, 539222, 1078444, 1348055, 2156888, 2696110, 4313776, 5392220, 10784440, 21568880]

約数ペア:

[(1, 21568880), (2, 10784440), (4, 5392220), (5, 4313776), (8, 2696110), (10, 2156888), (16, 1348055), (20, 1078444), (40, 539222), (53, 406960), (80, 269611), (106, 203480), (212, 101740), (265, 81392), (424, 50870), (530, 40696), (848, 25435), (1060, 20348), (2120, 10174), (4240, 5087)]