20591285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 9406795

約数列:

[1, 5, 11, 13, 31, 55, 65, 143, 155, 341, 403, 715, 929, 1705, 2015, 4433, 4645, 10219, 12077, 22165, 28799, 51095, 60385, 132847, 143995, 316789, 374387, 664235, 1583945, 1871935, 4118257, 20591285]

約数ペア:

[(1, 20591285), (5, 4118257), (11, 1871935), (13, 1583945), (31, 664235), (55, 374387), (65, 316789), (143, 143995), (155, 132847), (341, 60385), (403, 51095), (715, 28799), (929, 22165), (1705, 12077), (2015, 10219), (4433, 4645)]