20489709

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{239}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 29773440

約数和(自身を除く): 9283731

約数列:

[1, 3, 17, 41, 51, 123, 239, 697, 717, 1681, 2091, 4063, 5043, 9799, 12189, 28577, 29397, 85731, 166583, 401759, 499749, 1205277, 6829903, 20489709]

約数ペア:

[(1, 20489709), (3, 6829903), (17, 1205277), (41, 499749), (51, 401759), (123, 166583), (239, 85731), (697, 29397), (717, 28577), (1681, 12189), (2091, 9799), (4063, 5043)]