21355884

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 59404800

約数和(自身を除く): 38048916

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 199, 271, 396, 398, 542, 597, 796, 813, 1084, 1194, 1626, 1791, 2189, 2388, 2439, 2981, 3252, 3582, 4378, 4878, 5962, 6567, 7164, 8756, 8943, 9756, 11924, 13134, 17886, 19701, 26268, 26829, 35772, 39402, 53658, 53929, 78804, 107316, 107858, 161787, 215716, 323574, 485361, 593219, 647148, 970722, 1186438, 1779657, 1941444, 2372876, 3559314, 5338971, 7118628, 10677942, 21355884]

約数ペア:

[(1, 21355884), (2, 10677942), (3, 7118628), (4, 5338971), (6, 3559314), (9, 2372876), (11, 1941444), (12, 1779657), (18, 1186438), (22, 970722), (33, 647148), (36, 593219), (44, 485361), (66, 323574), (99, 215716), (132, 161787), (198, 107858), (199, 107316), (271, 78804), (396, 53929), (398, 53658), (542, 39402), (597, 35772), (796, 26829), (813, 26268), (1084, 19701), (1194, 17886), (1626, 13134), (1791, 11924), (2189, 9756), (2388, 8943), (2439, 8756), (2981, 7164), (3252, 6567), (3582, 5962), (4378, 4878)]