21663285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1069}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 39855360

約数和(自身を除く): 18192075

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 193, 579, 965, 1069, 1351, 2895, 3207, 4053, 5345, 6755, 7483, 16035, 20265, 22449, 37415, 112245, 206317, 618951, 1031585, 1444219, 3094755, 4332657, 7221095, 21663285]

約数ペア:

[(1, 21663285), (3, 7221095), (5, 4332657), (7, 3094755), (15, 1444219), (21, 1031585), (35, 618951), (105, 206317), (193, 112245), (579, 37415), (965, 22449), (1069, 20265), (1351, 16035), (2895, 7483), (3207, 6755), (4053, 5345)]