21011004

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:344

約数の個数: 108

約数和(自身を含む): 63447384

約数和(自身を除く): 42436380

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 49, 63, 84, 86, 98, 126, 129, 147, 172, 196, 252, 258, 277, 294, 301, 387, 441, 516, 554, 588, 602, 774, 831, 882, 903, 1108, 1204, 1548, 1662, 1764, 1806, 1939, 2107, 2493, 2709, 3324, 3612, 3878, 4214, 4986, 5418, 5817, 6321, 7756, 8428, 9972, 10836, 11634, 11911, 12642, 13573, 17451, 18963, 23268, 23822, 25284, 27146, 34902, 35733, 37926, 40719, 47644, 54292, 69804, 71466, 75852, 81438, 83377, 107199, 122157, 142932, 162876, 166754, 214398, 244314, 250131, 333508, 428796, 488628, 500262, 583639, 750393, 1000524, 1167278, 1500786, 1750917, 2334556, 3001572, 3501834, 5252751, 7003668, 10505502, 21011004]

約数ペア:

[(1, 21011004), (2, 10505502), (3, 7003668), (4, 5252751), (6, 3501834), (7, 3001572), (9, 2334556), (12, 1750917), (14, 1500786), (18, 1167278), (21, 1000524), (28, 750393), (36, 583639), (42, 500262), (43, 488628), (49, 428796), (63, 333508), (84, 250131), (86, 244314), (98, 214398), (126, 166754), (129, 162876), (147, 142932), (172, 122157), (196, 107199), (252, 83377), (258, 81438), (277, 75852), (294, 71466), (301, 69804), (387, 54292), (441, 47644), (516, 40719), (554, 37926), (588, 35733), (602, 34902), (774, 27146), (831, 25284), (882, 23822), (903, 23268), (1108, 18963), (1204, 17451), (1548, 13573), (1662, 12642), (1764, 11911), (1806, 11634), (1939, 10836), (2107, 9972), (2493, 8428), (2709, 7756), (3324, 6321), (3612, 5817), (3878, 5418), (4214, 4986)]