21208047

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2311}}^1$

素因数の和:2363

約数の個数: 32

約数和(自身を含む): 35512320

約数和(自身を除く): 14304273

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2311, 3059, 6933, 9177, 16177, 43909, 48531, 53153, 131727, 159459, 307363, 372071, 922089, 1009907, 1116213, 3029721, 7069349, 21208047]

約数ペア:

[(1, 21208047), (3, 7069349), (7, 3029721), (19, 1116213), (21, 1009907), (23, 922089), (57, 372071), (69, 307363), (133, 159459), (161, 131727), (399, 53153), (437, 48531), (483, 43909), (1311, 16177), (2311, 9177), (3059, 6933)]