21700143

素因数分解:

$3^6\times {\mathrm{17}}^2\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 42

約数和(自身を含む): 34897304

約数和(自身を除く): 13197161

約数列:

[1, 3, 9, 17, 27, 51, 81, 103, 153, 243, 289, 309, 459, 729, 867, 927, 1377, 1751, 2601, 2781, 4131, 5253, 7803, 8343, 12393, 15759, 23409, 25029, 29767, 47277, 70227, 75087, 89301, 141831, 210681, 267903, 425493, 803709, 1276479, 2411127, 7233381, 21700143]

約数ペア:

[(1, 21700143), (3, 7233381), (9, 2411127), (17, 1276479), (27, 803709), (51, 425493), (81, 267903), (103, 210681), (153, 141831), (243, 89301), (289, 75087), (309, 70227), (459, 47277), (729, 29767), (867, 25029), (927, 23409), (1377, 15759), (1751, 12393), (2601, 8343), (2781, 7803), (4131, 5253)]