28780275

素因数分解:

$3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{2801}}^1$

素因数の和:2951

約数の個数: 24

約数和(自身を含む): 47947824

約数和(自身を除く): 19167549

約数列:

[1, 3, 5, 15, 25, 75, 137, 411, 685, 2055, 2801, 3425, 8403, 10275, 14005, 42015, 70025, 210075, 383737, 1151211, 1918685, 5756055, 9593425, 28780275]

約数ペア:

[(1, 28780275), (3, 9593425), (5, 5756055), (15, 1918685), (25, 1151211), (75, 383737), (137, 210075), (411, 70025), (685, 42015), (2055, 14005), (2801, 10275), (3425, 8403)]