20286245

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2671}}^1$

素因数の和:2721

約数の個数: 24

約数和(自身を含む): 29242368

約数和(自身を除く): 8956123

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2671, 7595, 13355, 18697, 82801, 93485, 130879, 414005, 579607, 654395, 2898035, 4057249, 20286245]

約数ペア:

[(1, 20286245), (5, 4057249), (7, 2898035), (31, 654395), (35, 579607), (49, 414005), (155, 130879), (217, 93485), (245, 82801), (1085, 18697), (1519, 13355), (2671, 7595)]