21908920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 59486400

約数和(自身を除く): 37577480

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 29, 34, 40, 44, 55, 58, 68, 85, 88, 101, 110, 116, 136, 145, 170, 187, 202, 220, 232, 290, 319, 340, 374, 404, 440, 493, 505, 580, 638, 680, 748, 808, 935, 986, 1010, 1111, 1160, 1276, 1496, 1595, 1717, 1870, 1972, 2020, 2222, 2465, 2552, 2929, 3190, 3434, 3740, 3944, 4040, 4444, 4930, 5423, 5555, 5858, 6380, 6868, 7480, 8585, 8888, 9860, 10846, 11110, 11716, 12760, 13736, 14645, 17170, 18887, 19720, 21692, 22220, 23432, 27115, 29290, 32219, 34340, 37774, 43384, 44440, 49793, 54230, 58580, 64438, 68680, 75548, 94435, 99586, 108460, 117160, 128876, 151096, 161095, 188870, 199172, 216920, 248965, 257752, 322190, 377740, 398344, 497930, 547723, 644380, 755480, 995860, 1095446, 1288760, 1991720, 2190892, 2738615, 4381784, 5477230, 10954460, 21908920]

約数ペア:

[(1, 21908920), (2, 10954460), (4, 5477230), (5, 4381784), (8, 2738615), (10, 2190892), (11, 1991720), (17, 1288760), (20, 1095446), (22, 995860), (29, 755480), (34, 644380), (40, 547723), (44, 497930), (55, 398344), (58, 377740), (68, 322190), (85, 257752), (88, 248965), (101, 216920), (110, 199172), (116, 188870), (136, 161095), (145, 151096), (170, 128876), (187, 117160), (202, 108460), (220, 99586), (232, 94435), (290, 75548), (319, 68680), (340, 64438), (374, 58580), (404, 54230), (440, 49793), (493, 44440), (505, 43384), (580, 37774), (638, 34340), (680, 32219), (748, 29290), (808, 27115), (935, 23432), (986, 22220), (1010, 21692), (1111, 19720), (1160, 18887), (1276, 17170), (1496, 14645), (1595, 13736), (1717, 12760), (1870, 11716), (1972, 11110), (2020, 10846), (2222, 9860), (2465, 8888), (2552, 8585), (2929, 7480), (3190, 6868), (3434, 6380), (3740, 5858), (3944, 5555), (4040, 5423), (4444, 4930)]