20272221

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{919}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 32384000

約数和(自身を除く): 12111779

約数列:

[1, 3, 9, 19, 27, 43, 57, 129, 171, 387, 513, 817, 919, 1161, 2451, 2757, 7353, 8271, 17461, 22059, 24813, 39517, 52383, 118551, 157149, 355653, 471447, 750823, 1066959, 2252469, 6757407, 20272221]

約数ペア:

[(1, 20272221), (3, 6757407), (9, 2252469), (19, 1066959), (27, 750823), (43, 471447), (57, 355653), (129, 157149), (171, 118551), (387, 52383), (513, 39517), (817, 24813), (919, 22059), (1161, 17461), (2451, 8271), (2757, 7353)]