20731143

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 10061817

約数列:

[1, 3, 17, 29, 51, 87, 107, 131, 321, 393, 493, 1479, 1819, 2227, 3103, 3799, 5457, 6681, 9309, 11397, 14017, 42051, 52751, 64583, 158253, 193749, 238289, 406493, 714867, 1219479, 6910381, 20731143]

約数ペア:

[(1, 20731143), (3, 6910381), (17, 1219479), (29, 714867), (51, 406493), (87, 238289), (107, 193749), (131, 158253), (321, 64583), (393, 52751), (493, 42051), (1479, 14017), (1819, 11397), (2227, 9309), (3103, 6681), (3799, 5457)]