20848905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{547}}^1$

素因数の和:587

約数の個数: 72

約数和(自身を含む): 45479616

約数和(自身を除く): 24630711

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 121, 165, 231, 315, 363, 385, 495, 547, 605, 693, 847, 1089, 1155, 1641, 1815, 2541, 2735, 3465, 3829, 4235, 4923, 5445, 6017, 7623, 8205, 11487, 12705, 18051, 19145, 24615, 30085, 34461, 38115, 42119, 54153, 57435, 66187, 90255, 126357, 172305, 198561, 210595, 270765, 330935, 379071, 463309, 595683, 631785, 992805, 1389927, 1895355, 2316545, 2978415, 4169781, 6949635, 20848905]

約数ペア:

[(1, 20848905), (3, 6949635), (5, 4169781), (7, 2978415), (9, 2316545), (11, 1895355), (15, 1389927), (21, 992805), (33, 631785), (35, 595683), (45, 463309), (55, 379071), (63, 330935), (77, 270765), (99, 210595), (105, 198561), (121, 172305), (165, 126357), (231, 90255), (315, 66187), (363, 57435), (385, 54153), (495, 42119), (547, 38115), (605, 34461), (693, 30085), (847, 24615), (1089, 19145), (1155, 18051), (1641, 12705), (1815, 11487), (2541, 8205), (2735, 7623), (3465, 6017), (3829, 5445), (4235, 4923)]