21711261

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 36365760

約数和(自身を除く): 14654499

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 169, 187, 221, 229, 429, 507, 561, 663, 687, 1859, 2431, 2519, 2873, 2977, 3893, 5577, 7293, 7557, 8619, 8931, 11679, 31603, 32747, 38701, 42823, 50609, 94809, 98241, 116103, 128469, 151827, 425711, 556699, 657917, 1277133, 1670097, 1973751, 7237087, 21711261]

約数ペア:

[(1, 21711261), (3, 7237087), (11, 1973751), (13, 1670097), (17, 1277133), (33, 657917), (39, 556699), (51, 425711), (143, 151827), (169, 128469), (187, 116103), (221, 98241), (229, 94809), (429, 50609), (507, 42823), (561, 38701), (663, 32747), (687, 31603), (1859, 11679), (2431, 8931), (2519, 8619), (2873, 7557), (2977, 7293), (3893, 5577)]