20754960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5087}}^1$

素因数の和:5120

約数の個数: 80

約数和(自身を含む): 68138496

約数和(自身を除く): 47383536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5087, 10174, 15261, 20348, 25435, 30522, 40696, 50870, 61044, 76305, 81392, 86479, 101740, 122088, 152610, 172958, 203480, 244176, 259437, 305220, 345916, 406960, 432395, 518874, 610440, 691832, 864790, 1037748, 1220880, 1297185, 1383664, 1729580, 2075496, 2594370, 3459160, 4150992, 5188740, 6918320, 10377480, 20754960]

約数ペア:

[(1, 20754960), (2, 10377480), (3, 6918320), (4, 5188740), (5, 4150992), (6, 3459160), (8, 2594370), (10, 2075496), (12, 1729580), (15, 1383664), (16, 1297185), (17, 1220880), (20, 1037748), (24, 864790), (30, 691832), (34, 610440), (40, 518874), (48, 432395), (51, 406960), (60, 345916), (68, 305220), (80, 259437), (85, 244176), (102, 203480), (120, 172958), (136, 152610), (170, 122088), (204, 101740), (240, 86479), (255, 81392), (272, 76305), (340, 61044), (408, 50870), (510, 40696), (680, 30522), (816, 25435), (1020, 20348), (1360, 15261), (2040, 10174), (4080, 5087)]