725445

素因数分解:

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

素因数の和:79

約数の個数: 48

約数和(自身を含む): 1497600

約数和(自身を除く): 772155

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 49, 63, 105, 141, 147, 235, 245, 315, 329, 343, 423, 441, 705, 735, 987, 1029, 1645, 1715, 2115, 2205, 2303, 2961, 3087, 4935, 5145, 6909, 11515, 14805, 15435, 16121, 20727, 34545, 48363, 80605, 103635, 145089, 241815, 725445]

約数ペア:

[(1, 725445), (3, 241815), (5, 145089), (7, 103635), (9, 80605), (15, 48363), (21, 34545), (35, 20727), (45, 16121), (47, 15435), (49, 14805), (63, 11515), (105, 6909), (141, 5145), (147, 4935), (235, 3087), (245, 2961), (315, 2303), (329, 2205), (343, 2115), (423, 1715), (441, 1645), (705, 1029), (735, 987)]