19854560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:444

約数の個数: 96

約数和(自身を含む): 53071200

約数和(自身を除く): 33216640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 80, 88, 110, 116, 145, 160, 176, 220, 232, 290, 319, 352, 389, 440, 464, 580, 638, 778, 880, 928, 1160, 1276, 1556, 1595, 1760, 1945, 2320, 2552, 3112, 3190, 3890, 4279, 4640, 5104, 6224, 6380, 7780, 8558, 10208, 11281, 12448, 12760, 15560, 17116, 21395, 22562, 25520, 31120, 34232, 42790, 45124, 51040, 56405, 62240, 68464, 85580, 90248, 112810, 124091, 136928, 171160, 180496, 225620, 248182, 342320, 360992, 451240, 496364, 620455, 684640, 902480, 992728, 1240910, 1804960, 1985456, 2481820, 3970912, 4963640, 9927280, 19854560]

約数ペア:

[(1, 19854560), (2, 9927280), (4, 4963640), (5, 3970912), (8, 2481820), (10, 1985456), (11, 1804960), (16, 1240910), (20, 992728), (22, 902480), (29, 684640), (32, 620455), (40, 496364), (44, 451240), (55, 360992), (58, 342320), (80, 248182), (88, 225620), (110, 180496), (116, 171160), (145, 136928), (160, 124091), (176, 112810), (220, 90248), (232, 85580), (290, 68464), (319, 62240), (352, 56405), (389, 51040), (440, 45124), (464, 42790), (580, 34232), (638, 31120), (778, 25520), (880, 22562), (928, 21395), (1160, 17116), (1276, 15560), (1556, 12760), (1595, 12448), (1760, 11281), (1945, 10208), (2320, 8558), (2552, 7780), (3112, 6380), (3190, 6224), (3890, 5104), (4279, 4640)]