21236985

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1$

素因数の和:265

約数の個数: 96

約数和(自身を含む): 47803392

約数和(自身を除く): 26566407

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 81, 99, 105, 135, 165, 189, 227, 231, 243, 297, 315, 385, 405, 495, 567, 681, 693, 891, 945, 1135, 1155, 1215, 1485, 1589, 1701, 2043, 2079, 2497, 2673, 2835, 3405, 3465, 4455, 4767, 6129, 6237, 7491, 7945, 8505, 10215, 10395, 12485, 13365, 14301, 17479, 18387, 18711, 22473, 23835, 30645, 31185, 37455, 42903, 52437, 55161, 67419, 71505, 87395, 91935, 93555, 112365, 128709, 157311, 202257, 214515, 262185, 275805, 337095, 386127, 471933, 606771, 643545, 786555, 1011285, 1415799, 1930635, 2359665, 3033855, 4247397, 7078995, 21236985]

約数ペア:

[(1, 21236985), (3, 7078995), (5, 4247397), (7, 3033855), (9, 2359665), (11, 1930635), (15, 1415799), (21, 1011285), (27, 786555), (33, 643545), (35, 606771), (45, 471933), (55, 386127), (63, 337095), (77, 275805), (81, 262185), (99, 214515), (105, 202257), (135, 157311), (165, 128709), (189, 112365), (227, 93555), (231, 91935), (243, 87395), (297, 71505), (315, 67419), (385, 55161), (405, 52437), (495, 42903), (567, 37455), (681, 31185), (693, 30645), (891, 23835), (945, 22473), (1135, 18711), (1155, 18387), (1215, 17479), (1485, 14301), (1589, 13365), (1701, 12485), (2043, 10395), (2079, 10215), (2497, 8505), (2673, 7945), (2835, 7491), (3405, 6237), (3465, 6129), (4455, 4767)]