20712465

素因数分解:

$3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1039}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 36017280

約数和(自身を除く): 15304815

約数列:

[1, 3, 5, 9, 15, 45, 443, 1039, 1329, 2215, 3117, 3987, 5195, 6645, 9351, 15585, 19935, 46755, 460277, 1380831, 2301385, 4142493, 6904155, 20712465]

約数ペア:

[(1, 20712465), (3, 6904155), (5, 4142493), (9, 2301385), (15, 1380831), (45, 460277), (443, 46755), (1039, 19935), (1329, 15585), (2215, 9351), (3117, 6645), (3987, 5195)]