21275885

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{883}}^1$

素因数の和:1028

約数の個数: 16

約数和(自身を含む): 26307840

約数和(自身を除く): 5031955

約数列:

[1, 5, 61, 79, 305, 395, 883, 4415, 4819, 24095, 53863, 69757, 269315, 348785, 4255177, 21275885]

約数ペア:

[(1, 21275885), (5, 4255177), (61, 348785), (79, 269315), (305, 69757), (395, 53863), (883, 24095), (4415, 4819)]