28228880

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1373}}^1$

素因数の和:1643

約数の個数: 40

約数和(自身を含む): 65935512

約数和(自身を除く): 37706632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 1373, 2056, 2570, 2746, 4112, 5140, 5492, 6865, 10280, 10984, 13730, 20560, 21968, 27460, 54920, 109840, 352861, 705722, 1411444, 1764305, 2822888, 3528610, 5645776, 7057220, 14114440, 28228880]

約数ペア:

[(1, 28228880), (2, 14114440), (4, 7057220), (5, 5645776), (8, 3528610), (10, 2822888), (16, 1764305), (20, 1411444), (40, 705722), (80, 352861), (257, 109840), (514, 54920), (1028, 27460), (1285, 21968), (1373, 20560), (2056, 13730), (2570, 10984), (2746, 10280), (4112, 6865), (5140, 5492)]