813520

素因数分解:

$2^4\times 5^1\times {\mathrm{10169}}^1$

素因数の和:10182

約数の個数: 20

約数和(自身を含む): 1891620

約数和(自身を除く): 1078100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10169, 20338, 40676, 50845, 81352, 101690, 162704, 203380, 406760, 813520]

約数ペア:

[(1, 813520), (2, 406760), (4, 203380), (5, 162704), (8, 101690), (10, 81352), (16, 50845), (20, 40676), (40, 20338), (80, 10169)]