28757456

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19751}}^1$

素因数の和:19779

約数の個数: 40

約数和(自身を含む): 68578944

約数和(自身を除く): 39821488

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 19751, 39502, 79004, 138257, 158008, 256763, 276514, 316016, 513526, 553028, 1027052, 1106056, 1797341, 2054104, 2212112, 3594682, 4108208, 7189364, 14378728, 28757456]

約数ペア:

[(1, 28757456), (2, 14378728), (4, 7189364), (7, 4108208), (8, 3594682), (13, 2212112), (14, 2054104), (16, 1797341), (26, 1106056), (28, 1027052), (52, 553028), (56, 513526), (91, 316016), (104, 276514), (112, 256763), (182, 158008), (208, 138257), (364, 79004), (728, 39502), (1456, 19751)]