20748573

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{271}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 30890496

約数和(自身を除く): 10141923

約数列:

[1, 3, 9, 47, 141, 181, 271, 423, 543, 813, 1629, 2439, 8507, 12737, 25521, 38211, 49051, 76563, 114633, 147153, 441459, 2305397, 6916191, 20748573]

約数ペア:

[(1, 20748573), (3, 6916191), (9, 2305397), (47, 441459), (141, 147153), (181, 114633), (271, 76563), (423, 49051), (543, 38211), (813, 25521), (1629, 12737), (2439, 8507)]