21270249

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 42362880

約数和(自身を除く): 21092631

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 63, 77, 91, 99, 117, 143, 189, 231, 273, 297, 351, 429, 693, 787, 819, 1001, 1287, 2079, 2361, 2457, 3003, 3861, 5509, 7083, 8657, 9009, 10231, 16527, 21249, 25971, 27027, 30693, 49581, 60599, 71617, 77913, 92079, 112541, 148743, 181797, 214851, 233739, 276237, 337623, 545391, 644553, 787787, 1012869, 1636173, 1933659, 2363361, 3038607, 7090083, 21270249]

約数ペア:

[(1, 21270249), (3, 7090083), (7, 3038607), (9, 2363361), (11, 1933659), (13, 1636173), (21, 1012869), (27, 787787), (33, 644553), (39, 545391), (63, 337623), (77, 276237), (91, 233739), (99, 214851), (117, 181797), (143, 148743), (189, 112541), (231, 92079), (273, 77913), (297, 71617), (351, 60599), (429, 49581), (693, 30693), (787, 27027), (819, 25971), (1001, 21249), (1287, 16527), (2079, 10231), (2361, 9009), (2457, 8657), (3003, 7083), (3861, 5509)]