21043568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 51038400

約数和(自身を除く): 29994832

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 97, 104, 112, 149, 182, 194, 208, 298, 364, 388, 596, 679, 728, 776, 1043, 1192, 1261, 1358, 1456, 1552, 1937, 2086, 2384, 2522, 2716, 3874, 4172, 5044, 5432, 7748, 8344, 8827, 10088, 10864, 13559, 14453, 15496, 16688, 17654, 20176, 27118, 28906, 30992, 35308, 54236, 57812, 70616, 101171, 108472, 115624, 141232, 187889, 202342, 216944, 231248, 375778, 404684, 751556, 809368, 1315223, 1503112, 1618736, 2630446, 3006224, 5260892, 10521784, 21043568]

約数ペア:

[(1, 21043568), (2, 10521784), (4, 5260892), (7, 3006224), (8, 2630446), (13, 1618736), (14, 1503112), (16, 1315223), (26, 809368), (28, 751556), (52, 404684), (56, 375778), (91, 231248), (97, 216944), (104, 202342), (112, 187889), (149, 141232), (182, 115624), (194, 108472), (208, 101171), (298, 70616), (364, 57812), (388, 54236), (596, 35308), (679, 30992), (728, 28906), (776, 27118), (1043, 20176), (1192, 17654), (1261, 16688), (1358, 15496), (1456, 14453), (1552, 13559), (1937, 10864), (2086, 10088), (2384, 8827), (2522, 8344), (2716, 7748), (3874, 5432), (4172, 5044)]