21257000

素因数分解:

$2^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{733}}^1$

素因数の和:783

約数の個数: 64

約数和(自身を含む): 51526800

約数和(自身を除く): 30269800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 125, 145, 200, 232, 250, 290, 500, 580, 725, 733, 1000, 1160, 1450, 1466, 2900, 2932, 3625, 3665, 5800, 5864, 7250, 7330, 14500, 14660, 18325, 21257, 29000, 29320, 36650, 42514, 73300, 85028, 91625, 106285, 146600, 170056, 183250, 212570, 366500, 425140, 531425, 733000, 850280, 1062850, 2125700, 2657125, 4251400, 5314250, 10628500, 21257000]

約数ペア:

[(1, 21257000), (2, 10628500), (4, 5314250), (5, 4251400), (8, 2657125), (10, 2125700), (20, 1062850), (25, 850280), (29, 733000), (40, 531425), (50, 425140), (58, 366500), (100, 212570), (116, 183250), (125, 170056), (145, 146600), (200, 106285), (232, 91625), (250, 85028), (290, 73300), (500, 42514), (580, 36650), (725, 29320), (733, 29000), (1000, 21257), (1160, 18325), (1450, 14660), (1466, 14500), (2900, 7330), (2932, 7250), (3625, 5864), (3665, 5800)]