211071

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2$

素因数の和:75

約数の個数: 24

約数和(自身を含む): 353920

約数和(自身を除く): 142849

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 529, 1311, 1587, 3059, 3703, 9177, 10051, 11109, 30153, 70357, 211071]

約数ペア:

[(1, 211071), (3, 70357), (7, 30153), (19, 11109), (21, 10051), (23, 9177), (57, 3703), (69, 3059), (133, 1587), (161, 1311), (399, 529), (437, 483)]