21209128

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1579}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 42091200

約数和(自身を除く): 20882072

約数列:

[1, 2, 4, 8, 23, 46, 73, 92, 146, 184, 292, 584, 1579, 1679, 3158, 3358, 6316, 6716, 12632, 13432, 36317, 72634, 115267, 145268, 230534, 290536, 461068, 922136, 2651141, 5302282, 10604564, 21209128]

約数ペア:

[(1, 21209128), (2, 10604564), (4, 5302282), (8, 2651141), (23, 922136), (46, 461068), (73, 290536), (92, 230534), (146, 145268), (184, 115267), (292, 72634), (584, 36317), (1579, 13432), (1679, 12632), (3158, 6716), (3358, 6316)]