21689874

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{52391}}^1$

素因数の和:52422

約数の個数: 24

約数和(自身を含む): 49038912

約数和(自身を除く): 27349038

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 207, 414, 52391, 104782, 157173, 314346, 471519, 943038, 1204993, 2409986, 3614979, 7229958, 10844937, 21689874]

約数ペア:

[(1, 21689874), (2, 10844937), (3, 7229958), (6, 3614979), (9, 2409986), (18, 1204993), (23, 943038), (46, 471519), (69, 314346), (138, 157173), (207, 104782), (414, 52391)]