681345

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{103}}^1$

素因数の和:131

約数の個数: 48

約数和(自身を含む): 1422720

約数和(自身を除く): 741375

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 103, 105, 135, 147, 189, 245, 309, 315, 441, 515, 721, 735, 927, 945, 1323, 1545, 2163, 2205, 2781, 3605, 4635, 5047, 6489, 6615, 10815, 13905, 15141, 19467, 25235, 32445, 45423, 75705, 97335, 136269, 227115, 681345]

約数ペア:

[(1, 681345), (3, 227115), (5, 136269), (7, 97335), (9, 75705), (15, 45423), (21, 32445), (27, 25235), (35, 19467), (45, 15141), (49, 13905), (63, 10815), (103, 6615), (105, 6489), (135, 5047), (147, 4635), (189, 3605), (245, 2781), (309, 2205), (315, 2163), (441, 1545), (515, 1323), (721, 945), (735, 927)]