21480669

素因数分解:

$3^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{727}}^1$

素因数の和:814

約数の個数: 36

約数和(自身を含む): 36682464

約数和(自身を除く): 15201795

約数列:

[1, 3, 7, 9, 21, 49, 63, 67, 147, 201, 441, 469, 603, 727, 1407, 2181, 3283, 4221, 5089, 6543, 9849, 15267, 29547, 35623, 45801, 48709, 106869, 146127, 320607, 340963, 438381, 1022889, 2386741, 3068667, 7160223, 21480669]

約数ペア:

[(1, 21480669), (3, 7160223), (7, 3068667), (9, 2386741), (21, 1022889), (49, 438381), (63, 340963), (67, 320607), (147, 146127), (201, 106869), (441, 48709), (469, 45801), (603, 35623), (727, 29547), (1407, 15267), (2181, 9849), (3283, 6543), (4221, 5089)]