21874881

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{599}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13145919

約数列:

[1, 3, 7, 21, 37, 47, 111, 141, 259, 329, 599, 777, 987, 1739, 1797, 4193, 5217, 12173, 12579, 22163, 28153, 36519, 66489, 84459, 155141, 197071, 465423, 591213, 1041661, 3124983, 7291627, 21874881]

約数ペア:

[(1, 21874881), (3, 7291627), (7, 3124983), (21, 1041661), (37, 591213), (47, 465423), (111, 197071), (141, 155141), (259, 84459), (329, 66489), (599, 36519), (777, 28153), (987, 22163), (1739, 12579), (1797, 12173), (4193, 5217)]