21004326

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{307}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 53813760

約数和(自身を除く): 32809434

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 181, 189, 307, 362, 378, 543, 614, 921, 1086, 1267, 1629, 1842, 2149, 2534, 2763, 3258, 3801, 4298, 4887, 5526, 6447, 7602, 8289, 9774, 11403, 12894, 16578, 19341, 22806, 34209, 38682, 55567, 58023, 68418, 111134, 116046, 166701, 333402, 388969, 500103, 777938, 1000206, 1166907, 1500309, 2333814, 3000618, 3500721, 7001442, 10502163, 21004326]

約数ペア:

[(1, 21004326), (2, 10502163), (3, 7001442), (6, 3500721), (7, 3000618), (9, 2333814), (14, 1500309), (18, 1166907), (21, 1000206), (27, 777938), (42, 500103), (54, 388969), (63, 333402), (126, 166701), (181, 116046), (189, 111134), (307, 68418), (362, 58023), (378, 55567), (543, 38682), (614, 34209), (921, 22806), (1086, 19341), (1267, 16578), (1629, 12894), (1842, 11403), (2149, 9774), (2534, 8289), (2763, 7602), (3258, 6447), (3801, 5526), (4298, 4887)]