21720572

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{2671}}^1$

素因数の和:2801

約数の個数: 24

約数和(自身を含む): 40400640

約数和(自身を除く): 18680068

約数列:

[1, 2, 4, 19, 38, 76, 107, 214, 428, 2033, 2671, 4066, 5342, 8132, 10684, 50749, 101498, 202996, 285797, 571594, 1143188, 5430143, 10860286, 21720572]

約数ペア:

[(1, 21720572), (2, 10860286), (4, 5430143), (19, 1143188), (38, 571594), (76, 285797), (107, 202996), (214, 101498), (428, 50749), (2033, 10684), (2671, 8132), (4066, 5342)]