20549151

素因数分解:

$3^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{743}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 34045440

約数和(自身を除く): 13496289

約数列:

[1, 3, 7, 9, 21, 63, 439, 743, 1317, 2229, 3073, 3951, 5201, 6687, 9219, 15603, 27657, 46809, 326177, 978531, 2283239, 2935593, 6849717, 20549151]

約数ペア:

[(1, 20549151), (3, 6849717), (7, 2935593), (9, 2283239), (21, 978531), (63, 326177), (439, 46809), (743, 27657), (1317, 15603), (2229, 9219), (3073, 6687), (3951, 5201)]