19996040

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1319}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 45144000

約数和(自身を除く): 25147960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1319, 1516, 1895, 2638, 3032, 3790, 5276, 6595, 7580, 10552, 13190, 15160, 26380, 52760, 499901, 999802, 1999604, 2499505, 3999208, 4999010, 9998020, 19996040]

約数ペア:

[(1, 19996040), (2, 9998020), (4, 4999010), (5, 3999208), (8, 2499505), (10, 1999604), (20, 999802), (40, 499901), (379, 52760), (758, 26380), (1319, 15160), (1516, 13190), (1895, 10552), (2638, 7580), (3032, 6595), (3790, 5276)]