21764785

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1423}}^1$

素因数の和:1477

約数の個数: 32

約数和(自身を含む): 32808960

約数和(自身を除く): 11044175

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 665, 805, 1423, 2185, 3059, 7115, 9961, 15295, 27037, 32729, 49805, 135185, 163645, 189259, 229103, 621851, 946295, 1145515, 3109255, 4352957, 21764785]

約数ペア:

[(1, 21764785), (5, 4352957), (7, 3109255), (19, 1145515), (23, 946295), (35, 621851), (95, 229103), (115, 189259), (133, 163645), (161, 135185), (437, 49805), (665, 32729), (805, 27037), (1423, 15295), (2185, 9961), (3059, 7115)]