19734850

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 38399328

約数和(自身を除く): 18664478

約数列:

[1, 2, 5, 10, 25, 43, 50, 67, 86, 134, 137, 215, 274, 335, 430, 670, 685, 1075, 1370, 1675, 2150, 2881, 3350, 3425, 5762, 5891, 6850, 9179, 11782, 14405, 18358, 28810, 29455, 45895, 58910, 72025, 91790, 144050, 147275, 229475, 294550, 394697, 458950, 789394, 1973485, 3946970, 9867425, 19734850]

約数ペア:

[(1, 19734850), (2, 9867425), (5, 3946970), (10, 1973485), (25, 789394), (43, 458950), (50, 394697), (67, 294550), (86, 229475), (134, 147275), (137, 144050), (215, 91790), (274, 72025), (335, 58910), (430, 45895), (670, 29455), (685, 28810), (1075, 18358), (1370, 14405), (1675, 11782), (2150, 9179), (2881, 6850), (3350, 5891), (3425, 5762)]