310905

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{47}}^1$

素因数の和:75

約数の個数: 48

約数和(自身を含む): 656640

約数和(自身を除く): 345735

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 49, 63, 105, 135, 141, 147, 189, 235, 245, 315, 329, 423, 441, 705, 735, 945, 987, 1269, 1323, 1645, 2115, 2205, 2303, 2961, 4935, 6345, 6615, 6909, 8883, 11515, 14805, 20727, 34545, 44415, 62181, 103635, 310905]

約数ペア:

[(1, 310905), (3, 103635), (5, 62181), (7, 44415), (9, 34545), (15, 20727), (21, 14805), (27, 11515), (35, 8883), (45, 6909), (47, 6615), (49, 6345), (63, 4935), (105, 2961), (135, 2303), (141, 2205), (147, 2115), (189, 1645), (235, 1323), (245, 1269), (315, 987), (329, 945), (423, 735), (441, 705)]