28151025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 56335680

約数和(自身を除く): 28184655

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 43, 75, 87, 105, 129, 145, 175, 203, 215, 301, 435, 525, 609, 645, 725, 903, 1015, 1075, 1247, 1505, 1849, 2175, 3045, 3225, 3741, 4515, 5075, 5547, 6235, 7525, 8729, 9245, 12943, 15225, 18705, 22575, 26187, 27735, 31175, 38829, 43645, 46225, 53621, 64715, 93525, 130935, 138675, 160863, 194145, 218225, 268105, 323575, 375347, 654675, 804315, 970725, 1126041, 1340525, 1876735, 4021575, 5630205, 9383675, 28151025]

約数ペア:

[(1, 28151025), (3, 9383675), (5, 5630205), (7, 4021575), (15, 1876735), (21, 1340525), (25, 1126041), (29, 970725), (35, 804315), (43, 654675), (75, 375347), (87, 323575), (105, 268105), (129, 218225), (145, 194145), (175, 160863), (203, 138675), (215, 130935), (301, 93525), (435, 64715), (525, 53621), (609, 46225), (645, 43645), (725, 38829), (903, 31175), (1015, 27735), (1075, 26187), (1247, 22575), (1505, 18705), (1849, 15225), (2175, 12943), (3045, 9245), (3225, 8729), (3741, 7525), (4515, 6235), (5075, 5547)]