21132836

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:320

約数の個数: 36

約数和(自身を含む): 39894036

約数和(自身を除く): 18761200

約数列:

[1, 2, 4, 17, 34, 68, 101, 181, 202, 289, 362, 404, 578, 724, 1156, 1717, 3077, 3434, 6154, 6868, 12308, 18281, 29189, 36562, 52309, 58378, 73124, 104618, 116756, 209236, 310777, 621554, 1243108, 5283209, 10566418, 21132836]

約数ペア:

[(1, 21132836), (2, 10566418), (4, 5283209), (17, 1243108), (34, 621554), (68, 310777), (101, 209236), (181, 116756), (202, 104618), (289, 73124), (362, 58378), (404, 52309), (578, 36562), (724, 29189), (1156, 18281), (1717, 12308), (3077, 6868), (3434, 6154)]