20251539

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 40144896

約数和(自身を除く): 19893357

約数列:

[1, 3, 7, 9, 11, 17, 21, 27, 33, 51, 63, 77, 81, 99, 119, 153, 187, 189, 191, 231, 297, 357, 459, 561, 567, 573, 693, 891, 1071, 1309, 1337, 1377, 1683, 1719, 2079, 2101, 3213, 3247, 3927, 4011, 5049, 5157, 6237, 6303, 9639, 9741, 11781, 12033, 14707, 15147, 15471, 18909, 22729, 29223, 35343, 35717, 36099, 44121, 56727, 68187, 87669, 106029, 107151, 108297, 132363, 170181, 204561, 250019, 263007, 321453, 397089, 613683, 750057, 964359, 1191267, 1841049, 2250171, 2893077, 6750513, 20251539]

約数ペア:

[(1, 20251539), (3, 6750513), (7, 2893077), (9, 2250171), (11, 1841049), (17, 1191267), (21, 964359), (27, 750057), (33, 613683), (51, 397089), (63, 321453), (77, 263007), (81, 250019), (99, 204561), (119, 170181), (153, 132363), (187, 108297), (189, 107151), (191, 106029), (231, 87669), (297, 68187), (357, 56727), (459, 44121), (561, 36099), (567, 35717), (573, 35343), (693, 29223), (891, 22729), (1071, 18909), (1309, 15471), (1337, 15147), (1377, 14707), (1683, 12033), (1719, 11781), (2079, 9741), (2101, 9639), (3213, 6303), (3247, 6237), (3927, 5157), (4011, 5049)]