19903576

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 47232000

約数和(自身を除く): 27328424

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 79, 88, 154, 158, 308, 316, 409, 553, 616, 632, 818, 869, 1106, 1636, 1738, 2212, 2863, 3272, 3476, 4424, 4499, 5726, 6083, 6952, 8998, 11452, 12166, 17996, 22904, 24332, 31493, 32311, 35992, 48664, 62986, 64622, 125972, 129244, 226177, 251944, 258488, 355421, 452354, 710842, 904708, 1421684, 1809416, 2487947, 2843368, 4975894, 9951788, 19903576]

約数ペア:

[(1, 19903576), (2, 9951788), (4, 4975894), (7, 2843368), (8, 2487947), (11, 1809416), (14, 1421684), (22, 904708), (28, 710842), (44, 452354), (56, 355421), (77, 258488), (79, 251944), (88, 226177), (154, 129244), (158, 125972), (308, 64622), (316, 62986), (409, 48664), (553, 35992), (616, 32311), (632, 31493), (818, 24332), (869, 22904), (1106, 17996), (1636, 12166), (1738, 11452), (2212, 8998), (2863, 6952), (3272, 6083), (3476, 5726), (4424, 4499)]