17810721

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 26391456

約数和(自身を除く): 8580735

約数列:

[1, 3, 9, 83, 113, 211, 249, 339, 633, 747, 1017, 1899, 9379, 17513, 23843, 28137, 52539, 71529, 84411, 157617, 214587, 1978969, 5936907, 17810721]

約数ペア:

[(1, 17810721), (3, 5936907), (9, 1978969), (83, 214587), (113, 157617), (211, 84411), (249, 71529), (339, 52539), (633, 28137), (747, 23843), (1017, 17513), (1899, 9379)]