15865040

素因数分解:

$2^4\times 5^1\times {\mathrm{198313}}^1$

素因数の和:198326

約数の個数: 20

約数和(自身を含む): 36886404

約数和(自身を除く): 21021364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198313, 396626, 793252, 991565, 1586504, 1983130, 3173008, 3966260, 7932520, 15865040]

約数ペア:

[(1, 15865040), (2, 7932520), (4, 3966260), (5, 3173008), (8, 1983130), (10, 1586504), (16, 991565), (20, 793252), (40, 396626), (80, 198313)]