21869001

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 41256960

約数和(自身を除く): 19387959

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 67, 77, 99, 157, 189, 201, 231, 297, 469, 471, 603, 693, 737, 1099, 1407, 1413, 1727, 1809, 2079, 2211, 3297, 4221, 4239, 5159, 5181, 6633, 9891, 10519, 12089, 12663, 15477, 15543, 19899, 29673, 31557, 36267, 46431, 46629, 73633, 94671, 108801, 115709, 139293, 220899, 284013, 326403, 347127, 662697, 809963, 1041381, 1988091, 2429889, 3124143, 7289667, 21869001]

約数ペア:

[(1, 21869001), (3, 7289667), (7, 3124143), (9, 2429889), (11, 1988091), (21, 1041381), (27, 809963), (33, 662697), (63, 347127), (67, 326403), (77, 284013), (99, 220899), (157, 139293), (189, 115709), (201, 108801), (231, 94671), (297, 73633), (469, 46629), (471, 46431), (603, 36267), (693, 31557), (737, 29673), (1099, 19899), (1407, 15543), (1413, 15477), (1727, 12663), (1809, 12089), (2079, 10519), (2211, 9891), (3297, 6633), (4221, 5181), (4239, 5159)]