28266525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 58728384

約数和(自身を除く): 30461859

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 131, 137, 175, 225, 315, 393, 411, 525, 655, 685, 917, 959, 1179, 1233, 1575, 1965, 2055, 2751, 2877, 3275, 3425, 4585, 4795, 5895, 6165, 8253, 8631, 9825, 10275, 13755, 14385, 17947, 22925, 23975, 29475, 30825, 41265, 43155, 53841, 68775, 71925, 89735, 125629, 161523, 206325, 215775, 269205, 376887, 448675, 628145, 807615, 1130661, 1346025, 1884435, 3140725, 4038075, 5653305, 9422175, 28266525]

約数ペア:

[(1, 28266525), (3, 9422175), (5, 5653305), (7, 4038075), (9, 3140725), (15, 1884435), (21, 1346025), (25, 1130661), (35, 807615), (45, 628145), (63, 448675), (75, 376887), (105, 269205), (131, 215775), (137, 206325), (175, 161523), (225, 125629), (315, 89735), (393, 71925), (411, 68775), (525, 53841), (655, 43155), (685, 41265), (917, 30825), (959, 29475), (1179, 23975), (1233, 22925), (1575, 17947), (1965, 14385), (2055, 13755), (2751, 10275), (2877, 9825), (3275, 8631), (3425, 8253), (4585, 6165), (4795, 5895)]