20866689

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2579}}^1$

素因数の和:2645

約数の個数: 24

約数和(自身を含む): 32198400

約数和(自身を除く): 11331711

約数列:

[1, 3, 9, 29, 31, 87, 93, 261, 279, 899, 2579, 2697, 7737, 8091, 23211, 74791, 79949, 224373, 239847, 673119, 719541, 2318521, 6955563, 20866689]

約数ペア:

[(1, 20866689), (3, 6955563), (9, 2318521), (29, 719541), (31, 673119), (87, 239847), (93, 224373), (261, 79949), (279, 74791), (899, 23211), (2579, 8091), (2697, 7737)]