21961863

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 41385344

約数和(自身を除く): 19423481

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 63, 67, 77, 99, 121, 129, 201, 231, 301, 363, 387, 469, 473, 603, 693, 737, 847, 903, 1089, 1407, 1419, 2211, 2541, 2709, 2881, 3311, 4221, 4257, 5159, 5203, 6633, 7623, 8107, 8643, 9933, 15477, 15609, 20167, 24321, 25929, 29799, 31691, 36421, 46431, 46827, 56749, 60501, 72963, 95073, 109263, 170247, 181503, 221837, 285219, 327789, 348601, 510741, 665511, 1045803, 1996533, 2440207, 3137409, 7320621, 21961863]

約数ペア:

[(1, 21961863), (3, 7320621), (7, 3137409), (9, 2440207), (11, 1996533), (21, 1045803), (33, 665511), (43, 510741), (63, 348601), (67, 327789), (77, 285219), (99, 221837), (121, 181503), (129, 170247), (201, 109263), (231, 95073), (301, 72963), (363, 60501), (387, 56749), (469, 46827), (473, 46431), (603, 36421), (693, 31691), (737, 29799), (847, 25929), (903, 24321), (1089, 20167), (1407, 15609), (1419, 15477), (2211, 9933), (2541, 8643), (2709, 8107), (2881, 7623), (3311, 6633), (4221, 5203), (4257, 5159)]