21742375

素因数分解:

$5^3\times {\mathrm{281}}^1\times {\mathrm{619}}^1$

素因数の和:915

約数の個数: 16

約数和(自身を含む): 27275040

約数和(自身を除く): 5532665

約数列:

[1, 5, 25, 125, 281, 619, 1405, 3095, 7025, 15475, 35125, 77375, 173939, 869695, 4348475, 21742375]

約数ペア:

[(1, 21742375), (5, 4348475), (25, 869695), (125, 173939), (281, 77375), (619, 35125), (1405, 15475), (3095, 7025)]