21230562

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 25909278

約数列:

[1, 2, 3, 6, 19, 38, 43, 57, 61, 71, 86, 114, 122, 129, 142, 183, 213, 258, 366, 426, 817, 1159, 1349, 1634, 2318, 2451, 2623, 2698, 3053, 3477, 4047, 4331, 4902, 5246, 6106, 6954, 7869, 8094, 8662, 9159, 12993, 15738, 18318, 25986, 49837, 58007, 82289, 99674, 116014, 149511, 164578, 174021, 186233, 246867, 299022, 348042, 372466, 493734, 558699, 1117398, 3538427, 7076854, 10615281, 21230562]

約数ペア:

[(1, 21230562), (2, 10615281), (3, 7076854), (6, 3538427), (19, 1117398), (38, 558699), (43, 493734), (57, 372466), (61, 348042), (71, 299022), (86, 246867), (114, 186233), (122, 174021), (129, 164578), (142, 149511), (183, 116014), (213, 99674), (258, 82289), (366, 58007), (426, 49837), (817, 25986), (1159, 18318), (1349, 15738), (1634, 12993), (2318, 9159), (2451, 8662), (2623, 8094), (2698, 7869), (3053, 6954), (3477, 6106), (4047, 5246), (4331, 4902)]