21147728

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 30277552

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 29, 34, 56, 58, 68, 112, 116, 119, 136, 203, 232, 238, 272, 383, 406, 464, 476, 493, 766, 812, 952, 986, 1532, 1624, 1904, 1972, 2681, 3064, 3248, 3451, 3944, 5362, 6128, 6511, 6902, 7888, 10724, 11107, 13022, 13804, 21448, 22214, 26044, 27608, 42896, 44428, 45577, 52088, 55216, 77749, 88856, 91154, 104176, 155498, 177712, 182308, 188819, 310996, 364616, 377638, 621992, 729232, 755276, 1243984, 1321733, 1510552, 2643466, 3021104, 5286932, 10573864, 21147728]

約数ペア:

[(1, 21147728), (2, 10573864), (4, 5286932), (7, 3021104), (8, 2643466), (14, 1510552), (16, 1321733), (17, 1243984), (28, 755276), (29, 729232), (34, 621992), (56, 377638), (58, 364616), (68, 310996), (112, 188819), (116, 182308), (119, 177712), (136, 155498), (203, 104176), (232, 91154), (238, 88856), (272, 77749), (383, 55216), (406, 52088), (464, 45577), (476, 44428), (493, 42896), (766, 27608), (812, 26044), (952, 22214), (986, 21448), (1532, 13804), (1624, 13022), (1904, 11107), (1972, 10724), (2681, 7888), (3064, 6902), (3248, 6511), (3451, 6128), (3944, 5362)]