21564712

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{2053}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 43996680

約数和(自身を除く): 22431968

約数列:

[1, 2, 4, 8, 13, 26, 52, 101, 104, 202, 404, 808, 1313, 2053, 2626, 4106, 5252, 8212, 10504, 16424, 26689, 53378, 106756, 207353, 213512, 414706, 829412, 1658824, 2695589, 5391178, 10782356, 21564712]

約数ペア:

[(1, 21564712), (2, 10782356), (4, 5391178), (8, 2695589), (13, 1658824), (26, 829412), (52, 414706), (101, 213512), (104, 207353), (202, 106756), (404, 53378), (808, 26689), (1313, 16424), (2053, 10504), (2626, 8212), (4106, 5252)]