71142897

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 120627200

約数和(自身を除く): 49484303

約数列:

[1, 3, 7, 19, 21, 37, 57, 61, 79, 111, 133, 183, 237, 259, 399, 427, 553, 703, 777, 1159, 1281, 1501, 1659, 2109, 2257, 2923, 3477, 4503, 4819, 4921, 6771, 8113, 8769, 10507, 14457, 14763, 15799, 20461, 24339, 31521, 33733, 42883, 47397, 55537, 61383, 91561, 101199, 128649, 166611, 178303, 274683, 300181, 388759, 534909, 640927, 900543, 1166277, 1248121, 1922781, 3387757, 3744363, 10163271, 23714299, 71142897]

約数ペア:

[(1, 71142897), (3, 23714299), (7, 10163271), (19, 3744363), (21, 3387757), (37, 1922781), (57, 1248121), (61, 1166277), (79, 900543), (111, 640927), (133, 534909), (183, 388759), (237, 300181), (259, 274683), (399, 178303), (427, 166611), (553, 128649), (703, 101199), (777, 91561), (1159, 61383), (1281, 55537), (1501, 47397), (1659, 42883), (2109, 33733), (2257, 31521), (2923, 24339), (3477, 20461), (4503, 15799), (4819, 14763), (4921, 14457), (6771, 10507), (8113, 8769)]