21266091

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 40227840

約数和(自身を除く): 18961749

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 53, 63, 77, 99, 159, 189, 193, 231, 297, 371, 477, 579, 583, 693, 1113, 1351, 1431, 1737, 1749, 2079, 2123, 3339, 4053, 4081, 5211, 5247, 6369, 10017, 10229, 12159, 12243, 14861, 15741, 19107, 30687, 36477, 36729, 44583, 57321, 71603, 92061, 110187, 112519, 133749, 214809, 276183, 337557, 401247, 644427, 787633, 1012671, 1933281, 2362899, 3038013, 7088697, 21266091]

約数ペア:

[(1, 21266091), (3, 7088697), (7, 3038013), (9, 2362899), (11, 1933281), (21, 1012671), (27, 787633), (33, 644427), (53, 401247), (63, 337557), (77, 276183), (99, 214809), (159, 133749), (189, 112519), (193, 110187), (231, 92061), (297, 71603), (371, 57321), (477, 44583), (579, 36729), (583, 36477), (693, 30687), (1113, 19107), (1351, 15741), (1431, 14861), (1737, 12243), (1749, 12159), (2079, 10229), (2123, 10017), (3339, 6369), (4053, 5247), (4081, 5211)]