21108906

素因数分解:

$2^1\times 3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 57657600

約数和(自身を除く): 36548694

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 49, 63, 78, 91, 98, 117, 126, 147, 182, 234, 263, 273, 294, 343, 441, 526, 546, 637, 686, 789, 819, 882, 1029, 1274, 1578, 1638, 1841, 1911, 2058, 2367, 3087, 3419, 3682, 3822, 4459, 4734, 5523, 5733, 6174, 6838, 8918, 10257, 11046, 11466, 12887, 13377, 16569, 20514, 23933, 25774, 26754, 30771, 33138, 38661, 40131, 47866, 61542, 71799, 77322, 80262, 90209, 115983, 143598, 167531, 180418, 215397, 231966, 270627, 335062, 430794, 502593, 541254, 811881, 1005186, 1172717, 1507779, 1623762, 2345434, 3015558, 3518151, 7036302, 10554453, 21108906]

約数ペア:

[(1, 21108906), (2, 10554453), (3, 7036302), (6, 3518151), (7, 3015558), (9, 2345434), (13, 1623762), (14, 1507779), (18, 1172717), (21, 1005186), (26, 811881), (39, 541254), (42, 502593), (49, 430794), (63, 335062), (78, 270627), (91, 231966), (98, 215397), (117, 180418), (126, 167531), (147, 143598), (182, 115983), (234, 90209), (263, 80262), (273, 77322), (294, 71799), (343, 61542), (441, 47866), (526, 40131), (546, 38661), (637, 33138), (686, 30771), (789, 26754), (819, 25774), (882, 23933), (1029, 20514), (1274, 16569), (1578, 13377), (1638, 12887), (1841, 11466), (1911, 11046), (2058, 10257), (2367, 8918), (3087, 6838), (3419, 6174), (3682, 5733), (3822, 5523), (4459, 4734)]