28981920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{499}}^1$

素因数の和:539

約数の個数: 144

約数和(自身を含む): 100548000

約数和(自身を除く): 71566080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 121, 132, 160, 165, 176, 220, 240, 242, 264, 330, 352, 363, 440, 480, 484, 499, 528, 605, 660, 726, 880, 968, 998, 1056, 1210, 1320, 1452, 1497, 1760, 1815, 1936, 1996, 2420, 2495, 2640, 2904, 2994, 3630, 3872, 3992, 4840, 4990, 5280, 5489, 5808, 5988, 7260, 7485, 7984, 9680, 9980, 10978, 11616, 11976, 14520, 14970, 15968, 16467, 19360, 19960, 21956, 23952, 27445, 29040, 29940, 32934, 39920, 43912, 47904, 54890, 58080, 59880, 60379, 65868, 79840, 82335, 87824, 109780, 119760, 120758, 131736, 164670, 175648, 181137, 219560, 239520, 241516, 263472, 301895, 329340, 362274, 439120, 483032, 526944, 603790, 658680, 724548, 878240, 905685, 966064, 1207580, 1317360, 1449096, 1811370, 1932128, 2415160, 2634720, 2898192, 3622740, 4830320, 5796384, 7245480, 9660640, 14490960, 28981920]

約数ペア:

[(1, 28981920), (2, 14490960), (3, 9660640), (4, 7245480), (5, 5796384), (6, 4830320), (8, 3622740), (10, 2898192), (11, 2634720), (12, 2415160), (15, 1932128), (16, 1811370), (20, 1449096), (22, 1317360), (24, 1207580), (30, 966064), (32, 905685), (33, 878240), (40, 724548), (44, 658680), (48, 603790), (55, 526944), (60, 483032), (66, 439120), (80, 362274), (88, 329340), (96, 301895), (110, 263472), (120, 241516), (121, 239520), (132, 219560), (160, 181137), (165, 175648), (176, 164670), (220, 131736), (240, 120758), (242, 119760), (264, 109780), (330, 87824), (352, 82335), (363, 79840), (440, 65868), (480, 60379), (484, 59880), (499, 58080), (528, 54890), (605, 47904), (660, 43912), (726, 39920), (880, 32934), (968, 29940), (998, 29040), (1056, 27445), (1210, 23952), (1320, 21956), (1452, 19960), (1497, 19360), (1760, 16467), (1815, 15968), (1936, 14970), (1996, 14520), (2420, 11976), (2495, 11616), (2640, 10978), (2904, 9980), (2994, 9680), (3630, 7984), (3872, 7485), (3992, 7260), (4840, 5988), (4990, 5808), (5280, 5489)]