20517555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4733}}^1$

素因数の和:4775

約数の個数: 24

約数和(自身を含む): 34880112

約数和(自身を除く): 14362557

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4733, 14199, 23665, 70995, 80461, 241383, 402305, 1206915, 1367837, 4103511, 6839185, 20517555]

約数ペア:

[(1, 20517555), (3, 6839185), (5, 4103511), (15, 1367837), (17, 1206915), (51, 402305), (85, 241383), (255, 80461), (289, 70995), (867, 23665), (1445, 14199), (4335, 4733)]