18531821

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 6351379

約数列:

[1, 7, 11, 19, 53, 77, 133, 209, 239, 371, 583, 1007, 1463, 1673, 2629, 4081, 4541, 7049, 11077, 12667, 18403, 31787, 49951, 77539, 88669, 139337, 240673, 349657, 975359, 1684711, 2647403, 18531821]

約数ペア:

[(1, 18531821), (7, 2647403), (11, 1684711), (19, 975359), (53, 349657), (77, 240673), (133, 139337), (209, 88669), (239, 77539), (371, 49951), (583, 31787), (1007, 18403), (1463, 12667), (1673, 11077), (2629, 7049), (4081, 4541)]