21275037

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9127}}^1$

素因数の和:9177

約数の個数: 24

約数和(自身を含む): 36073856

約数和(自身を除く): 14798819

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 9127, 27381, 63889, 82143, 191667, 337699, 575001, 1013097, 2363893, 3039291, 7091679, 21275037]

約数ペア:

[(1, 21275037), (3, 7091679), (7, 3039291), (9, 2363893), (21, 1013097), (37, 575001), (63, 337699), (111, 191667), (259, 82143), (333, 63889), (777, 27381), (2331, 9127)]