20990703

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{1361}}^1$

素因数の和:1514

約数の個数: 16

約数和(自身を含む): 28830816

約数和(自身を除く): 7840113

約数列:

[1, 3, 53, 97, 159, 291, 1361, 4083, 5141, 15423, 72133, 132017, 216399, 396051, 6996901, 20990703]

約数ペア:

[(1, 20990703), (3, 6996901), (53, 396051), (97, 216399), (159, 132017), (291, 72133), (1361, 15423), (4083, 5141)]