28720846

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 57024000

約数和(自身を除く): 28303154

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 59, 77, 109, 118, 154, 203, 218, 319, 406, 413, 638, 649, 763, 826, 1199, 1298, 1526, 1711, 2233, 2398, 3161, 3422, 4466, 4543, 6322, 6431, 8393, 9086, 11977, 12862, 16786, 18821, 22127, 23954, 34771, 37642, 44254, 45017, 69542, 70741, 90034, 131747, 141482, 186499, 243397, 263494, 372998, 486794, 495187, 990374, 1305493, 2051489, 2610986, 4102978, 14360423, 28720846]

約数ペア:

[(1, 28720846), (2, 14360423), (7, 4102978), (11, 2610986), (14, 2051489), (22, 1305493), (29, 990374), (58, 495187), (59, 486794), (77, 372998), (109, 263494), (118, 243397), (154, 186499), (203, 141482), (218, 131747), (319, 90034), (406, 70741), (413, 69542), (638, 45017), (649, 44254), (763, 37642), (826, 34771), (1199, 23954), (1298, 22127), (1526, 18821), (1711, 16786), (2233, 12862), (2398, 11977), (3161, 9086), (3422, 8393), (4466, 6431), (4543, 6322)]