19785160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11503}}^1$

素因数の和:11557

約数の個数: 32

約数和(自身を含む): 45555840

約数和(自身を除く): 25770680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11503, 23006, 46012, 57515, 92024, 115030, 230060, 460120, 494629, 989258, 1978516, 2473145, 3957032, 4946290, 9892580, 19785160]

約数ペア:

[(1, 19785160), (2, 9892580), (4, 4946290), (5, 3957032), (8, 2473145), (10, 1978516), (20, 989258), (40, 494629), (43, 460120), (86, 230060), (172, 115030), (215, 92024), (344, 57515), (430, 46012), (860, 23006), (1720, 11503)]