128663920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20887}}^1$

素因数の和:20918

約数の個数: 80

約数和(自身を含む): 372976128

約数和(自身を除く): 244312208

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 6160, 20887, 41774, 83548, 104435, 146209, 167096, 208870, 229757, 292418, 334192, 417740, 459514, 584836, 731045, 835480, 919028, 1148785, 1169672, 1462090, 1608299, 1670960, 1838056, 2297570, 2339344, 2924180, 3216598, 3676112, 4595140, 5848360, 6433196, 8041495, 9190280, 11696720, 12866392, 16082990, 18380560, 25732784, 32165980, 64331960, 128663920]

約数ペア:

[(1, 128663920), (2, 64331960), (4, 32165980), (5, 25732784), (7, 18380560), (8, 16082990), (10, 12866392), (11, 11696720), (14, 9190280), (16, 8041495), (20, 6433196), (22, 5848360), (28, 4595140), (35, 3676112), (40, 3216598), (44, 2924180), (55, 2339344), (56, 2297570), (70, 1838056), (77, 1670960), (80, 1608299), (88, 1462090), (110, 1169672), (112, 1148785), (140, 919028), (154, 835480), (176, 731045), (220, 584836), (280, 459514), (308, 417740), (385, 334192), (440, 292418), (560, 229757), (616, 208870), (770, 167096), (880, 146209), (1232, 104435), (1540, 83548), (3080, 41774), (6160, 20887)]