21091504

素因数分解:

$2^4\times 7^1\times {\mathrm{188317}}^1$

素因数の和:188332

約数の個数: 20

約数和(自身を含む): 46702864

約数和(自身を除く): 25611360

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 188317, 376634, 753268, 1318219, 1506536, 2636438, 3013072, 5272876, 10545752, 21091504]

約数ペア:

[(1, 21091504), (2, 10545752), (4, 5272876), (7, 3013072), (8, 2636438), (14, 1506536), (16, 1318219), (28, 753268), (56, 376634), (112, 188317)]