21486455

素因数分解:

$5^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:195

約数の個数: 24

約数和(自身を含む): 27487152

約数和(自身を除く): 6000697

約数列:

[1, 5, 37, 43, 73, 185, 215, 365, 1369, 1591, 2701, 3139, 6845, 7955, 13505, 15695, 58867, 99937, 116143, 294335, 499685, 580715, 4297291, 21486455]

約数ペア:

[(1, 21486455), (5, 4297291), (37, 580715), (43, 499685), (73, 294335), (185, 116143), (215, 99937), (365, 58867), (1369, 15695), (1591, 13505), (2701, 7955), (3139, 6845)]