20789325

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1621}}^1$

素因数の和:1659

約数の個数: 48

約数和(自身を含む): 40225600

約数和(自身を除く): 19436275

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 1621, 2565, 4275, 4863, 8105, 12825, 14589, 24315, 30799, 40525, 43767, 72945, 92397, 121575, 153995, 218835, 277191, 364725, 461985, 769975, 831573, 1094175, 1385955, 2309925, 4157865, 6929775, 20789325]

約数ペア:

[(1, 20789325), (3, 6929775), (5, 4157865), (9, 2309925), (15, 1385955), (19, 1094175), (25, 831573), (27, 769975), (45, 461985), (57, 364725), (75, 277191), (95, 218835), (135, 153995), (171, 121575), (225, 92397), (285, 72945), (475, 43767), (513, 40525), (675, 30799), (855, 24315), (1425, 14589), (1621, 12825), (2565, 8105), (4275, 4863)]