20979200

素因数分解:

$2^9\times 5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:188

約数の個数: 120

約数和(自身を含む): 57083400

約数和(自身を除く): 36104200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 128, 149, 160, 176, 200, 220, 256, 275, 298, 320, 352, 400, 440, 512, 550, 596, 640, 704, 745, 800, 880, 1100, 1192, 1280, 1408, 1490, 1600, 1639, 1760, 2200, 2384, 2560, 2816, 2980, 3200, 3278, 3520, 3725, 4400, 4768, 5632, 5960, 6400, 6556, 7040, 7450, 8195, 8800, 9536, 11920, 12800, 13112, 14080, 14900, 16390, 17600, 19072, 23840, 26224, 28160, 29800, 32780, 35200, 38144, 40975, 47680, 52448, 59600, 65560, 70400, 76288, 81950, 95360, 104896, 119200, 131120, 140800, 163900, 190720, 209792, 238400, 262240, 327800, 381440, 419584, 476800, 524480, 655600, 839168, 953600, 1048960, 1311200, 1907200, 2097920, 2622400, 4195840, 5244800, 10489600, 20979200]

約数ペア:

[(1, 20979200), (2, 10489600), (4, 5244800), (5, 4195840), (8, 2622400), (10, 2097920), (11, 1907200), (16, 1311200), (20, 1048960), (22, 953600), (25, 839168), (32, 655600), (40, 524480), (44, 476800), (50, 419584), (55, 381440), (64, 327800), (80, 262240), (88, 238400), (100, 209792), (110, 190720), (128, 163900), (149, 140800), (160, 131120), (176, 119200), (200, 104896), (220, 95360), (256, 81950), (275, 76288), (298, 70400), (320, 65560), (352, 59600), (400, 52448), (440, 47680), (512, 40975), (550, 38144), (596, 35200), (640, 32780), (704, 29800), (745, 28160), (800, 26224), (880, 23840), (1100, 19072), (1192, 17600), (1280, 16390), (1408, 14900), (1490, 14080), (1600, 13112), (1639, 12800), (1760, 11920), (2200, 9536), (2384, 8800), (2560, 8195), (2816, 7450), (2980, 7040), (3200, 6556), (3278, 6400), (3520, 5960), (3725, 5632), (4400, 4768)]