21565096

素因数分解:

$2^3\times 7^3\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 48960000

約数和(自身を除く): 27394904

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 49, 56, 58, 98, 116, 196, 203, 232, 271, 343, 392, 406, 542, 686, 812, 1084, 1372, 1421, 1624, 1897, 2168, 2744, 2842, 3794, 5684, 7588, 7859, 9947, 11368, 13279, 15176, 15718, 19894, 26558, 31436, 39788, 53116, 55013, 62872, 79576, 92953, 106232, 110026, 185906, 220052, 371812, 385091, 440104, 743624, 770182, 1540364, 2695637, 3080728, 5391274, 10782548, 21565096]

約数ペア:

[(1, 21565096), (2, 10782548), (4, 5391274), (7, 3080728), (8, 2695637), (14, 1540364), (28, 770182), (29, 743624), (49, 440104), (56, 385091), (58, 371812), (98, 220052), (116, 185906), (196, 110026), (203, 106232), (232, 92953), (271, 79576), (343, 62872), (392, 55013), (406, 53116), (542, 39788), (686, 31436), (812, 26558), (1084, 19894), (1372, 15718), (1421, 15176), (1624, 13279), (1897, 11368), (2168, 9947), (2744, 7859), (2842, 7588), (3794, 5684)]