71761221

素因数分解:

$3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1889}}^1$

素因数の和:1975

約数の個数: 40

約数和(自身を含む): 124407360

約数和(自身を除く): 52646139

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 469, 567, 603, 1407, 1809, 1889, 4221, 5427, 5667, 12663, 13223, 17001, 37989, 39669, 51003, 119007, 126563, 153009, 357021, 379689, 885941, 1071063, 1139067, 2657823, 3417201, 7973469, 10251603, 23920407, 71761221]

約数ペア:

[(1, 71761221), (3, 23920407), (7, 10251603), (9, 7973469), (21, 3417201), (27, 2657823), (63, 1139067), (67, 1071063), (81, 885941), (189, 379689), (201, 357021), (469, 153009), (567, 126563), (603, 119007), (1407, 51003), (1809, 39669), (1889, 37989), (4221, 17001), (5427, 13223), (5667, 12663)]