21179739

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1447}}^1$

素因数の和:1515

約数の個数: 32

約数和(自身を含む): 35030016

約数和(自身を除く): 13850277

約数列:

[1, 3, 7, 17, 21, 41, 51, 119, 123, 287, 357, 697, 861, 1447, 2091, 4341, 4879, 10129, 14637, 24599, 30387, 59327, 73797, 172193, 177981, 415289, 516579, 1008559, 1245867, 3025677, 7059913, 21179739]

約数ペア:

[(1, 21179739), (3, 7059913), (7, 3025677), (17, 1245867), (21, 1008559), (41, 516579), (51, 415289), (119, 177981), (123, 172193), (287, 73797), (357, 59327), (697, 30387), (861, 24599), (1447, 14637), (2091, 10129), (4341, 4879)]