21259504

素因数分解:

$2^4\times 7^1\times {\mathrm{189817}}^1$

素因数の和:189832

約数の個数: 20

約数和(自身を含む): 47074864

約数和(自身を除く): 25815360

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189817, 379634, 759268, 1328719, 1518536, 2657438, 3037072, 5314876, 10629752, 21259504]

約数ペア:

[(1, 21259504), (2, 10629752), (4, 5314876), (7, 3037072), (8, 2657438), (14, 1518536), (16, 1328719), (28, 759268), (56, 379634), (112, 189817)]