208782020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{2011}}^1$

素因数の和:2228

約数の個数: 48

約数和(自身を含む): 456321600

約数和(自身を除く): 247539580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 179, 290, 358, 580, 716, 895, 1790, 2011, 3580, 4022, 5191, 8044, 10055, 10382, 20110, 20764, 25955, 40220, 51910, 58319, 103820, 116638, 233276, 291595, 359969, 583190, 719938, 1166380, 1439876, 1799845, 3599690, 7199380, 10439101, 20878202, 41756404, 52195505, 104391010, 208782020]

約数ペア:

[(1, 208782020), (2, 104391010), (4, 52195505), (5, 41756404), (10, 20878202), (20, 10439101), (29, 7199380), (58, 3599690), (116, 1799845), (145, 1439876), (179, 1166380), (290, 719938), (358, 583190), (580, 359969), (716, 291595), (895, 233276), (1790, 116638), (2011, 103820), (3580, 58319), (4022, 51910), (5191, 40220), (8044, 25955), (10055, 20764), (10382, 20110)]