20851000

素因数分解:

$2^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{719}}^1$

素因数の和:769

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 29693000

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, 719, 725, 1000, 1160, 1438, 1450, 2876, 2900, 3595, 3625, 5752, 5800, 7190, 7250, 14380, 14500, 17975, 20851, 28760, 29000, 35950, 41702, 71900, 83404, 89875, 104255, 143800, 166808, 179750, 208510, 359500, 417020, 521275, 719000, 834040, 1042550, 2085100, 2606375, 4170200, 5212750, 10425500, 20851000]

約数ペア:

[(1, 20851000), (2, 10425500), (4, 5212750), (5, 4170200), (8, 2606375), (10, 2085100), (20, 1042550), (25, 834040), (29, 719000), (40, 521275), (50, 417020), (58, 359500), (100, 208510), (116, 179750), (125, 166808), (145, 143800), (200, 104255), (232, 89875), (250, 83404), (290, 71900), (500, 41702), (580, 35950), (719, 29000), (725, 28760), (1000, 20851), (1160, 17975), (1438, 14500), (1450, 14380), (2876, 7250), (2900, 7190), (3595, 5800), (3625, 5752)]