21128000

素因数分解:

$2^6\times 5^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:185

約数の個数: 112

約数和(自身を含む): 55473600

約数和(自身を除く): 34345600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 125, 139, 152, 160, 190, 200, 250, 278, 304, 320, 380, 400, 475, 500, 556, 608, 695, 760, 800, 950, 1000, 1112, 1216, 1390, 1520, 1600, 1900, 2000, 2224, 2375, 2641, 2780, 3040, 3475, 3800, 4000, 4448, 4750, 5282, 5560, 6080, 6950, 7600, 8000, 8896, 9500, 10564, 11120, 13205, 13900, 15200, 17375, 19000, 21128, 22240, 26410, 27800, 30400, 34750, 38000, 42256, 44480, 52820, 55600, 66025, 69500, 76000, 84512, 105640, 111200, 132050, 139000, 152000, 169024, 211280, 222400, 264100, 278000, 330125, 422560, 528200, 556000, 660250, 845120, 1056400, 1112000, 1320500, 2112800, 2641000, 4225600, 5282000, 10564000, 21128000]

約数ペア:

[(1, 21128000), (2, 10564000), (4, 5282000), (5, 4225600), (8, 2641000), (10, 2112800), (16, 1320500), (19, 1112000), (20, 1056400), (25, 845120), (32, 660250), (38, 556000), (40, 528200), (50, 422560), (64, 330125), (76, 278000), (80, 264100), (95, 222400), (100, 211280), (125, 169024), (139, 152000), (152, 139000), (160, 132050), (190, 111200), (200, 105640), (250, 84512), (278, 76000), (304, 69500), (320, 66025), (380, 55600), (400, 52820), (475, 44480), (500, 42256), (556, 38000), (608, 34750), (695, 30400), (760, 27800), (800, 26410), (950, 22240), (1000, 21128), (1112, 19000), (1216, 17375), (1390, 15200), (1520, 13900), (1600, 13205), (1900, 11120), (2000, 10564), (2224, 9500), (2375, 8896), (2641, 8000), (2780, 7600), (3040, 6950), (3475, 6080), (3800, 5560), (4000, 5282), (4448, 4750)]