28398920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 76032000

約数和(自身を除く): 47633080

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 43, 44, 55, 76, 79, 86, 88, 95, 110, 152, 158, 172, 190, 209, 215, 220, 316, 344, 380, 395, 418, 430, 440, 473, 632, 760, 790, 817, 836, 860, 869, 946, 1045, 1501, 1580, 1634, 1672, 1720, 1738, 1892, 2090, 2365, 3002, 3160, 3268, 3397, 3476, 3784, 4085, 4180, 4345, 4730, 6004, 6536, 6794, 6952, 7505, 8170, 8360, 8690, 8987, 9460, 12008, 13588, 15010, 16340, 16511, 16985, 17380, 17974, 18920, 27176, 30020, 32680, 33022, 33970, 34760, 35948, 37367, 44935, 60040, 64543, 66044, 67940, 71896, 74734, 82555, 89870, 129086, 132088, 135880, 149468, 165110, 179740, 186835, 258172, 298936, 322715, 330220, 359480, 373670, 516344, 645430, 660440, 709973, 747340, 1290860, 1419946, 1494680, 2581720, 2839892, 3549865, 5679784, 7099730, 14199460, 28398920]

約数ペア:

[(1, 28398920), (2, 14199460), (4, 7099730), (5, 5679784), (8, 3549865), (10, 2839892), (11, 2581720), (19, 1494680), (20, 1419946), (22, 1290860), (38, 747340), (40, 709973), (43, 660440), (44, 645430), (55, 516344), (76, 373670), (79, 359480), (86, 330220), (88, 322715), (95, 298936), (110, 258172), (152, 186835), (158, 179740), (172, 165110), (190, 149468), (209, 135880), (215, 132088), (220, 129086), (316, 89870), (344, 82555), (380, 74734), (395, 71896), (418, 67940), (430, 66044), (440, 64543), (473, 60040), (632, 44935), (760, 37367), (790, 35948), (817, 34760), (836, 33970), (860, 33022), (869, 32680), (946, 30020), (1045, 27176), (1501, 18920), (1580, 17974), (1634, 17380), (1672, 16985), (1720, 16511), (1738, 16340), (1892, 15010), (2090, 13588), (2365, 12008), (3002, 9460), (3160, 8987), (3268, 8690), (3397, 8360), (3476, 8170), (3784, 7505), (4085, 6952), (4180, 6794), (4345, 6536), (4730, 6004)]