21704072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1153}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 44105880

約数和(自身を除く): 22401808

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 181, 362, 724, 1153, 1448, 2306, 2353, 4612, 4706, 9224, 9412, 14989, 18824, 29978, 59956, 119912, 208693, 417386, 834772, 1669544, 2713009, 5426018, 10852036, 21704072]

約数ペア:

[(1, 21704072), (2, 10852036), (4, 5426018), (8, 2713009), (13, 1669544), (26, 834772), (52, 417386), (104, 208693), (181, 119912), (362, 59956), (724, 29978), (1153, 18824), (1448, 14989), (2306, 9412), (2353, 9224), (4612, 4706)]