20348868080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{318349}}^1$

素因数の和:318426

約数の個数: 80

約数和(自身を含む): 51160118400

約数和(自身を除く): 30811250320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 47, 68, 80, 85, 94, 136, 170, 188, 235, 272, 340, 376, 470, 680, 752, 799, 940, 1360, 1598, 1880, 3196, 3760, 3995, 6392, 7990, 12784, 15980, 31960, 63920, 318349, 636698, 1273396, 1591745, 2546792, 3183490, 5093584, 5411933, 6366980, 10823866, 12733960, 14962403, 21647732, 25467920, 27059665, 29924806, 43295464, 54119330, 59849612, 74812015, 86590928, 108238660, 119699224, 149624030, 216477320, 239398448, 254360851, 299248060, 432954640, 508721702, 598496120, 1017443404, 1196992240, 1271804255, 2034886808, 2543608510, 4069773616, 5087217020, 10174434040, 20348868080]

約数ペア:

[(1, 20348868080), (2, 10174434040), (4, 5087217020), (5, 4069773616), (8, 2543608510), (10, 2034886808), (16, 1271804255), (17, 1196992240), (20, 1017443404), (34, 598496120), (40, 508721702), (47, 432954640), (68, 299248060), (80, 254360851), (85, 239398448), (94, 216477320), (136, 149624030), (170, 119699224), (188, 108238660), (235, 86590928), (272, 74812015), (340, 59849612), (376, 54119330), (470, 43295464), (680, 29924806), (752, 27059665), (799, 25467920), (940, 21647732), (1360, 14962403), (1598, 12733960), (1880, 10823866), (3196, 6366980), (3760, 5411933), (3995, 5093584), (6392, 3183490), (7990, 2546792), (12784, 1591745), (15980, 1273396), (31960, 636698), (63920, 318349)]