20723595

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{449}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 14657205

約数列:

[1, 3, 5, 15, 17, 51, 85, 181, 255, 449, 543, 905, 1347, 2245, 2715, 3077, 6735, 7633, 9231, 15385, 22899, 38165, 46155, 81269, 114495, 243807, 406345, 1219035, 1381573, 4144719, 6907865, 20723595]

約数ペア:

[(1, 20723595), (3, 6907865), (5, 4144719), (15, 1381573), (17, 1219035), (51, 406345), (85, 243807), (181, 114495), (255, 81269), (449, 46155), (543, 38165), (905, 22899), (1347, 15385), (2245, 9231), (2715, 7633), (3077, 6735)]