21945609

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8101}}^1$

素因数の和:8157

約数の個数: 24

約数和(自身を含む): 37074752

約数和(自身を除く): 15129143

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 8101, 24303, 56707, 72909, 170121, 348343, 510363, 1045029, 2438401, 3135087, 7315203, 21945609]

約数ペア:

[(1, 21945609), (3, 7315203), (7, 3135087), (9, 2438401), (21, 1045029), (43, 510363), (63, 348343), (129, 170121), (301, 72909), (387, 56707), (903, 24303), (2709, 8101)]