21289912

素因数分解:

$2^3\times 7^2\times {\mathrm{54311}}^1$

素因数の和:54331

約数の個数: 24

約数和(自身を含む): 46436760

約数和(自身を除く): 25146848

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 54311, 108622, 217244, 380177, 434488, 760354, 1520708, 2661239, 3041416, 5322478, 10644956, 21289912]

約数ペア:

[(1, 21289912), (2, 10644956), (4, 5322478), (7, 3041416), (8, 2661239), (14, 1520708), (28, 760354), (49, 434488), (56, 380177), (98, 217244), (196, 108622), (392, 54311)]