18747729

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2081}}^1$

素因数の和:2118

約数の個数: 48

約数和(自身を含む): 36376704

約数和(自身を除く): 17628975

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 117, 143, 231, 273, 429, 693, 819, 1001, 1287, 2081, 3003, 6243, 9009, 14567, 18729, 22891, 27053, 43701, 68673, 81159, 131103, 160237, 189371, 206019, 243477, 297583, 480711, 568113, 892749, 1442133, 1704339, 2083081, 2678247, 6249243, 18747729]

約数ペア:

[(1, 18747729), (3, 6249243), (7, 2678247), (9, 2083081), (11, 1704339), (13, 1442133), (21, 892749), (33, 568113), (39, 480711), (63, 297583), (77, 243477), (91, 206019), (99, 189371), (117, 160237), (143, 131103), (231, 81159), (273, 68673), (429, 43701), (693, 27053), (819, 22891), (1001, 18729), (1287, 14567), (2081, 9009), (3003, 6243)]