20552315

素因数分解:

$5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{563}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 28933200

約数和(自身を除く): 8380885

約数列:

[1, 5, 7, 35, 49, 149, 245, 563, 745, 1043, 2815, 3941, 5215, 7301, 19705, 27587, 36505, 83887, 137935, 419435, 587209, 2936045, 4110463, 20552315]

約数ペア:

[(1, 20552315), (5, 4110463), (7, 2936045), (35, 587209), (49, 419435), (149, 137935), (245, 83887), (563, 36505), (745, 27587), (1043, 19705), (2815, 7301), (3941, 5215)]