21971565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{373}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 50409216

約数和(自身を除く): 28437651

約数列:

[1, 3, 5, 7, 9, 11, 15, 17, 21, 33, 35, 45, 51, 55, 63, 77, 85, 99, 105, 119, 153, 165, 187, 231, 255, 315, 357, 373, 385, 495, 561, 595, 693, 765, 935, 1071, 1119, 1155, 1309, 1683, 1785, 1865, 2611, 2805, 3357, 3465, 3927, 4103, 5355, 5595, 6341, 6545, 7833, 8415, 11781, 12309, 13055, 16785, 19023, 19635, 20515, 23499, 28721, 31705, 36927, 39165, 44387, 57069, 58905, 61545, 69751, 86163, 95115, 117495, 133161, 143605, 184635, 209253, 221935, 258489, 285345, 348755, 399483, 430815, 488257, 627759, 665805, 1046265, 1292445, 1464771, 1997415, 2441285, 3138795, 4394313, 7323855, 21971565]

約数ペア:

[(1, 21971565), (3, 7323855), (5, 4394313), (7, 3138795), (9, 2441285), (11, 1997415), (15, 1464771), (17, 1292445), (21, 1046265), (33, 665805), (35, 627759), (45, 488257), (51, 430815), (55, 399483), (63, 348755), (77, 285345), (85, 258489), (99, 221935), (105, 209253), (119, 184635), (153, 143605), (165, 133161), (187, 117495), (231, 95115), (255, 86163), (315, 69751), (357, 61545), (373, 58905), (385, 57069), (495, 44387), (561, 39165), (595, 36927), (693, 31705), (765, 28721), (935, 23499), (1071, 20515), (1119, 19635), (1155, 19023), (1309, 16785), (1683, 13055), (1785, 12309), (1865, 11781), (2611, 8415), (2805, 7833), (3357, 6545), (3465, 6341), (3927, 5595), (4103, 5355)]