21548571

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{541}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 33716736

約数和(自身を除く): 12168165

約数列:

[1, 3, 11, 17, 33, 51, 71, 187, 213, 541, 561, 781, 1207, 1623, 2343, 3621, 5951, 9197, 13277, 17853, 27591, 38411, 39831, 101167, 115233, 303501, 422521, 652987, 1267563, 1958961, 7182857, 21548571]

約数ペア:

[(1, 21548571), (3, 7182857), (11, 1958961), (17, 1267563), (33, 652987), (51, 422521), (71, 303501), (187, 115233), (213, 101167), (541, 39831), (561, 38411), (781, 27591), (1207, 17853), (1623, 13277), (2343, 9197), (3621, 5951)]