20697885

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35381}}^1$

素因数の和:35405

約数の個数: 24

約数和(自身を含む): 38637144

約数和(自身を除く): 17939259

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35381, 106143, 176905, 318429, 459953, 530715, 1379859, 1592145, 2299765, 4139577, 6899295, 20697885]

約数ペア:

[(1, 20697885), (3, 6899295), (5, 4139577), (9, 2299765), (13, 1592145), (15, 1379859), (39, 530715), (45, 459953), (65, 318429), (117, 176905), (195, 106143), (585, 35381)]