20159811

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4507}}^1$

素因数の和:4591

約数の個数: 24

約数和(自身を含む): 33755904

約数和(自身を除く): 13596093

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4507, 13521, 31549, 40563, 94647, 283941, 319997, 959991, 2239979, 2879973, 6719937, 20159811]

約数ペア:

[(1, 20159811), (3, 6719937), (7, 2879973), (9, 2239979), (21, 959991), (63, 319997), (71, 283941), (213, 94647), (497, 40563), (639, 31549), (1491, 13521), (4473, 4507)]