20421171

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2099}}^1$

素因数の和:2175

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 11028429

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2099, 3243, 6297, 9729, 18891, 48277, 98653, 144831, 295959, 434493, 887877, 2269019, 6807057, 20421171]

約数ペア:

[(1, 20421171), (3, 6807057), (9, 2269019), (23, 887877), (47, 434493), (69, 295959), (141, 144831), (207, 98653), (423, 48277), (1081, 18891), (2099, 9729), (3243, 6297)]