15864080

素因数分解:

$2^4\times 5^1\times {\mathrm{198301}}^1$

素因数の和:198314

約数の個数: 20

約数和(自身を含む): 36884172

約数和(自身を除く): 21020092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198301, 396602, 793204, 991505, 1586408, 1983010, 3172816, 3966020, 7932040, 15864080]

約数ペア:

[(1, 15864080), (2, 7932040), (4, 3966020), (5, 3172816), (8, 1983010), (10, 1586408), (16, 991505), (20, 793204), (40, 396602), (80, 198301)]