19999696

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54347}}^1$

素因数の和:54378

約数の個数: 20

約数和(自身を含む): 40434912

約数和(自身を除く): 20435216

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54347, 108694, 217388, 434776, 869552, 1249981, 2499962, 4999924, 9999848, 19999696]

約数ペア:

[(1, 19999696), (2, 9999848), (4, 4999924), (8, 2499962), (16, 1249981), (23, 869552), (46, 434776), (92, 217388), (184, 108694), (368, 54347)]