21329385

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 43407360

約数和(自身を除く): 22077975

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 59, 77, 105, 165, 177, 231, 295, 313, 385, 413, 649, 885, 939, 1155, 1239, 1565, 1947, 2065, 2191, 3245, 3443, 4543, 4695, 6195, 6573, 9735, 10329, 10955, 13629, 17215, 18467, 22715, 24101, 32865, 51645, 55401, 68145, 72303, 92335, 120505, 129269, 203137, 277005, 361515, 387807, 609411, 646345, 1015685, 1421959, 1939035, 3047055, 4265877, 7109795, 21329385]

約数ペア:

[(1, 21329385), (3, 7109795), (5, 4265877), (7, 3047055), (11, 1939035), (15, 1421959), (21, 1015685), (33, 646345), (35, 609411), (55, 387807), (59, 361515), (77, 277005), (105, 203137), (165, 129269), (177, 120505), (231, 92335), (295, 72303), (313, 68145), (385, 55401), (413, 51645), (649, 32865), (885, 24101), (939, 22715), (1155, 18467), (1239, 17215), (1565, 13629), (1947, 10955), (2065, 10329), (2191, 9735), (3245, 6573), (3443, 6195), (4543, 4695)]