21343905

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1597}}^1$

素因数の和:1628

約数の個数: 48

約数和(自身を含む): 41880384

約数和(自身を除く): 20536479

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 891, 1215, 1485, 1597, 2673, 4455, 4791, 7985, 13365, 14373, 17567, 23955, 43119, 52701, 71865, 87835, 129357, 158103, 215595, 263505, 388071, 474309, 646785, 790515, 1422927, 1940355, 2371545, 4268781, 7114635, 21343905]

約数ペア:

[(1, 21343905), (3, 7114635), (5, 4268781), (9, 2371545), (11, 1940355), (15, 1422927), (27, 790515), (33, 646785), (45, 474309), (55, 388071), (81, 263505), (99, 215595), (135, 158103), (165, 129357), (243, 87835), (297, 71865), (405, 52701), (495, 43119), (891, 23955), (1215, 17567), (1485, 14373), (1597, 13365), (2673, 7985), (4455, 4791)]