21131874

素因数分解:

$2^1\times 3^3\times {\mathrm{391331}}^1$

素因数の和:391342

約数の個数: 16

約数和(自身を含む): 46959840

約数和(自身を除く): 25827966

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391331, 782662, 1173993, 2347986, 3521979, 7043958, 10565937, 21131874]

約数ペア:

[(1, 21131874), (2, 10565937), (3, 7043958), (6, 3521979), (9, 2347986), (18, 1173993), (27, 782662), (54, 391331)]