21129752

素因数分解:

$2^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2971}}^1$

素因数の和:3111

約数の個数: 32

約数和(自身を含む): 45649920

約数和(自身を除く): 24520168

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 127, 254, 508, 889, 1016, 1778, 2971, 3556, 5942, 7112, 11884, 20797, 23768, 41594, 83188, 166376, 377317, 754634, 1509268, 2641219, 3018536, 5282438, 10564876, 21129752]

約数ペア:

[(1, 21129752), (2, 10564876), (4, 5282438), (7, 3018536), (8, 2641219), (14, 1509268), (28, 754634), (56, 377317), (127, 166376), (254, 83188), (508, 41594), (889, 23768), (1016, 20797), (1778, 11884), (2971, 7112), (3556, 5942)]