19997284805

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{3207263}}^1$

素因数の和:3207340

約数の個数: 16

約数和(自身を含む): 25401530880

約数和(自身を除く): 5404246075

約数列:

[1, 5, 29, 43, 145, 215, 1247, 6235, 3207263, 16036315, 93010627, 137912309, 465053135, 689561545, 3999456961, 19997284805]

約数ペア:

[(1, 19997284805), (5, 3999456961), (29, 689561545), (43, 465053135), (145, 137912309), (215, 93010627), (1247, 16036315), (6235, 3207263)]