21554385

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{467}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 36796032

約数和(自身を除く): 15241647

約数列:

[1, 3, 5, 15, 17, 51, 85, 181, 255, 467, 543, 905, 1401, 2335, 2715, 3077, 7005, 7939, 9231, 15385, 23817, 39695, 46155, 84527, 119085, 253581, 422635, 1267905, 1436959, 4310877, 7184795, 21554385]

約数ペア:

[(1, 21554385), (3, 7184795), (5, 4310877), (15, 1436959), (17, 1267905), (51, 422635), (85, 253581), (181, 119085), (255, 84527), (467, 46155), (543, 39695), (905, 23817), (1401, 15385), (2335, 9231), (2715, 7939), (3077, 7005)]