1991061

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{523}}^1$

素因数の和:582

約数の個数: 20

約数和(自身を含む): 3043392

約数和(自身を除く): 1052331

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 523, 1269, 1569, 3807, 4707, 14121, 24581, 42363, 73743, 221229, 663687, 1991061]

約数ペア:

[(1, 1991061), (3, 663687), (9, 221229), (27, 73743), (47, 42363), (81, 24581), (141, 14121), (423, 4707), (523, 3807), (1269, 1569)]