20866275

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1627}}^1$

素因数の和:1665

約数の個数: 48

約数和(自身を含む): 40374400

約数和(自身を除く): 19508125

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 1627, 2565, 4275, 4881, 8135, 12825, 14643, 24405, 30913, 40675, 43929, 73215, 92739, 122025, 154565, 219645, 278217, 366075, 463695, 772825, 834651, 1098225, 1391085, 2318475, 4173255, 6955425, 20866275]

約数ペア:

[(1, 20866275), (3, 6955425), (5, 4173255), (9, 2318475), (15, 1391085), (19, 1098225), (25, 834651), (27, 772825), (45, 463695), (57, 366075), (75, 278217), (95, 219645), (135, 154565), (171, 122025), (225, 92739), (285, 73215), (475, 43929), (513, 40675), (675, 30913), (855, 24405), (1425, 14643), (1627, 12825), (2565, 8135), (4275, 4881)]