20316475

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 26650080

約数和(自身を除く): 6333605

約数列:

[1, 5, 23, 25, 89, 115, 397, 445, 575, 1985, 2047, 2225, 9131, 9925, 10235, 35333, 45655, 51175, 176665, 228275, 812659, 883325, 4063295, 20316475]

約数ペア:

[(1, 20316475), (5, 4063295), (23, 883325), (25, 812659), (89, 228275), (115, 176665), (397, 51175), (445, 45655), (575, 35333), (1985, 10235), (2047, 9925), (2225, 9131)]