21013490

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 39747456

約数和(自身を除く): 18733966

約数列:

[1, 2, 5, 10, 23, 46, 115, 211, 230, 422, 433, 866, 1055, 2110, 2165, 4330, 4853, 9706, 9959, 19918, 24265, 48530, 49795, 91363, 99590, 182726, 456815, 913630, 2101349, 4202698, 10506745, 21013490]

約数ペア:

[(1, 21013490), (2, 10506745), (5, 4202698), (10, 2101349), (23, 913630), (46, 456815), (115, 182726), (211, 99590), (230, 91363), (422, 49795), (433, 48530), (866, 24265), (1055, 19918), (2110, 9959), (2165, 9706), (4330, 4853)]