21902265

素因数分解:

$3^3\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 128

約数和(自身を含む): 50688000

約数和(自身を除く): 28785735

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 43, 45, 49, 55, 63, 77, 99, 105, 129, 135, 147, 165, 189, 215, 231, 245, 297, 301, 315, 343, 385, 387, 441, 473, 495, 539, 645, 693, 735, 903, 945, 1029, 1155, 1161, 1323, 1419, 1485, 1505, 1617, 1715, 1935, 2079, 2107, 2205, 2365, 2695, 2709, 3087, 3311, 3465, 3773, 4257, 4515, 4851, 5145, 5805, 6321, 6615, 7095, 8085, 8127, 9261, 9933, 10395, 10535, 11319, 12771, 13545, 14553, 14749, 15435, 16555, 18865, 18963, 21285, 23177, 24255, 29799, 31605, 33957, 40635, 44247, 46305, 49665, 56595, 56889, 63855, 69531, 72765, 73745, 89397, 94815, 101871, 115885, 132741, 148995, 162239, 169785, 208593, 221235, 284445, 347655, 398223, 446985, 486717, 509355, 625779, 663705, 811195, 1042965, 1460151, 1991115, 2433585, 3128895, 4380453, 7300755, 21902265]

約数ペア:

[(1, 21902265), (3, 7300755), (5, 4380453), (7, 3128895), (9, 2433585), (11, 1991115), (15, 1460151), (21, 1042965), (27, 811195), (33, 663705), (35, 625779), (43, 509355), (45, 486717), (49, 446985), (55, 398223), (63, 347655), (77, 284445), (99, 221235), (105, 208593), (129, 169785), (135, 162239), (147, 148995), (165, 132741), (189, 115885), (215, 101871), (231, 94815), (245, 89397), (297, 73745), (301, 72765), (315, 69531), (343, 63855), (385, 56889), (387, 56595), (441, 49665), (473, 46305), (495, 44247), (539, 40635), (645, 33957), (693, 31605), (735, 29799), (903, 24255), (945, 23177), (1029, 21285), (1155, 18963), (1161, 18865), (1323, 16555), (1419, 15435), (1485, 14749), (1505, 14553), (1617, 13545), (1715, 12771), (1935, 11319), (2079, 10535), (2107, 10395), (2205, 9933), (2365, 9261), (2695, 8127), (2709, 8085), (3087, 7095), (3311, 6615), (3465, 6321), (3773, 5805), (4257, 5145), (4515, 4851)]