21878838

素因数分解:

$2^1\times 3^2\times {\mathrm{163}}^1\times {\mathrm{7457}}^1$

素因数の和:7628

約数の個数: 24

約数和(自身を含む): 47701368

約数和(自身を除く): 25822530

約数列:

[1, 2, 3, 6, 9, 18, 163, 326, 489, 978, 1467, 2934, 7457, 14914, 22371, 44742, 67113, 134226, 1215491, 2430982, 3646473, 7292946, 10939419, 21878838]

約数ペア:

[(1, 21878838), (2, 10939419), (3, 7292946), (6, 3646473), (9, 2430982), (18, 1215491), (163, 134226), (326, 67113), (489, 44742), (978, 22371), (1467, 14914), (2934, 7457)]