20867000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1$

素因数の和:310

約数の個数: 128

約数和(自身を含む): 61102080

約数和(自身を除く): 40235080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 125, 140, 154, 175, 200, 220, 250, 271, 275, 280, 308, 350, 385, 440, 500, 542, 550, 616, 700, 770, 875, 1000, 1084, 1100, 1355, 1375, 1400, 1540, 1750, 1897, 1925, 2168, 2200, 2710, 2750, 2981, 3080, 3500, 3794, 3850, 5420, 5500, 5962, 6775, 7000, 7588, 7700, 9485, 9625, 10840, 11000, 11924, 13550, 14905, 15176, 15400, 18970, 19250, 20867, 23848, 27100, 29810, 33875, 37940, 38500, 41734, 47425, 54200, 59620, 67750, 74525, 75880, 77000, 83468, 94850, 104335, 119240, 135500, 149050, 166936, 189700, 208670, 237125, 271000, 298100, 372625, 379400, 417340, 474250, 521675, 596200, 745250, 834680, 948500, 1043350, 1490500, 1897000, 2086700, 2608375, 2981000, 4173400, 5216750, 10433500, 20867000]

約数ペア:

[(1, 20867000), (2, 10433500), (4, 5216750), (5, 4173400), (7, 2981000), (8, 2608375), (10, 2086700), (11, 1897000), (14, 1490500), (20, 1043350), (22, 948500), (25, 834680), (28, 745250), (35, 596200), (40, 521675), (44, 474250), (50, 417340), (55, 379400), (56, 372625), (70, 298100), (77, 271000), (88, 237125), (100, 208670), (110, 189700), (125, 166936), (140, 149050), (154, 135500), (175, 119240), (200, 104335), (220, 94850), (250, 83468), (271, 77000), (275, 75880), (280, 74525), (308, 67750), (350, 59620), (385, 54200), (440, 47425), (500, 41734), (542, 38500), (550, 37940), (616, 33875), (700, 29810), (770, 27100), (875, 23848), (1000, 20867), (1084, 19250), (1100, 18970), (1355, 15400), (1375, 15176), (1400, 14905), (1540, 13550), (1750, 11924), (1897, 11000), (1925, 10840), (2168, 9625), (2200, 9485), (2710, 7700), (2750, 7588), (2981, 7000), (3080, 6775), (3500, 5962), (3794, 5500), (3850, 5420)]