280665

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{11}}^1$

素因数の和:41

約数の個数: 56

約数和(自身を含む): 629568

約数和(自身を除く): 348903

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 81, 99, 105, 135, 165, 189, 231, 243, 297, 315, 385, 405, 495, 567, 693, 729, 891, 945, 1155, 1215, 1485, 1701, 2079, 2673, 2835, 3465, 3645, 4455, 5103, 6237, 8019, 8505, 10395, 13365, 18711, 25515, 31185, 40095, 56133, 93555, 280665]

約数ペア:

[(1, 280665), (3, 93555), (5, 56133), (7, 40095), (9, 31185), (11, 25515), (15, 18711), (21, 13365), (27, 10395), (33, 8505), (35, 8019), (45, 6237), (55, 5103), (63, 4455), (77, 3645), (81, 3465), (99, 2835), (105, 2673), (135, 2079), (165, 1701), (189, 1485), (231, 1215), (243, 1155), (297, 945), (315, 891), (385, 729), (405, 693), (495, 567)]