21042861

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2293}}^1$

素因数の和:2345

約数の個数: 32

約数和(自身を含む): 35235840

約数和(自身を除く): 14192979

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2293, 3059, 6879, 9177, 16051, 43567, 48153, 52739, 130701, 158217, 304969, 369173, 914907, 1002041, 1107519, 3006123, 7014287, 21042861]

約数ペア:

[(1, 21042861), (3, 7014287), (7, 3006123), (19, 1107519), (21, 1002041), (23, 914907), (57, 369173), (69, 304969), (133, 158217), (161, 130701), (399, 52739), (437, 48153), (483, 43567), (1311, 16051), (2293, 9177), (3059, 6879)]