21936837

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 32800768

約数和(自身を除く): 10863931

約数列:

[1, 3, 13, 39, 43, 103, 127, 129, 309, 381, 559, 1339, 1651, 1677, 4017, 4429, 4953, 5461, 13081, 13287, 16383, 39243, 57577, 70993, 170053, 172731, 212979, 510159, 562483, 1687449, 7312279, 21936837]

約数ペア:

[(1, 21936837), (3, 7312279), (13, 1687449), (39, 562483), (43, 510159), (103, 212979), (127, 172731), (129, 170053), (309, 70993), (381, 57577), (559, 39243), (1339, 16383), (1651, 13287), (1677, 13081), (4017, 5461), (4429, 4953)]