19703888

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:335

約数の個数: 40

約数和(自身を含む): 39272040

約数和(自身を除く): 19568152

約数列:

[1, 2, 4, 8, 16, 89, 101, 137, 178, 202, 274, 356, 404, 548, 712, 808, 1096, 1424, 1616, 2192, 8989, 12193, 13837, 17978, 24386, 27674, 35956, 48772, 55348, 71912, 97544, 110696, 143824, 195088, 221392, 1231493, 2462986, 4925972, 9851944, 19703888]

約数ペア:

[(1, 19703888), (2, 9851944), (4, 4925972), (8, 2462986), (16, 1231493), (89, 221392), (101, 195088), (137, 143824), (178, 110696), (202, 97544), (274, 71912), (356, 55348), (404, 48772), (548, 35956), (712, 27674), (808, 24386), (1096, 17978), (1424, 13837), (1616, 12193), (2192, 8989)]