20671235

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1439}}^1$

素因数の和:1487

約数の個数: 24

約数和(自身を含む): 28460160

約数和(自身を除く): 7788925

約数列:

[1, 5, 13, 17, 65, 85, 169, 221, 845, 1105, 1439, 2873, 7195, 14365, 18707, 24463, 93535, 122315, 243191, 318019, 1215955, 1590095, 4134247, 20671235]

約数ペア:

[(1, 20671235), (5, 4134247), (13, 1590095), (17, 1215955), (65, 318019), (85, 243191), (169, 122315), (221, 93535), (845, 24463), (1105, 18707), (1439, 14365), (2873, 7195)]