21698409

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{863}}^1$

素因数の和:929

約数の個数: 24

約数和(自身を含む): 31829760

約数和(自身を除く): 10131351

約数列:

[1, 3, 17, 29, 51, 87, 289, 493, 863, 867, 1479, 2589, 8381, 14671, 25027, 25143, 44013, 75081, 249407, 425459, 748221, 1276377, 7232803, 21698409]

約数ペア:

[(1, 21698409), (3, 7232803), (17, 1276377), (29, 748221), (51, 425459), (87, 249407), (289, 75081), (493, 44013), (863, 25143), (867, 25027), (1479, 14671), (2589, 8381)]