638144637

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{6907}}^1$

素因数の和:7049

約数の個数: 32

約数和(自身を含む): 965572608

約数和(自身を除く): 327427971

約数列:

[1, 3, 13, 23, 39, 69, 103, 299, 309, 897, 1339, 2369, 4017, 6907, 7107, 20721, 30797, 89791, 92391, 158861, 269373, 476583, 711421, 2065193, 2134263, 6195579, 9248473, 16362683, 27745419, 49088049, 212714879, 638144637]

約数ペア:

[(1, 638144637), (3, 212714879), (13, 49088049), (23, 27745419), (39, 16362683), (69, 9248473), (103, 6195579), (299, 2134263), (309, 2065193), (897, 711421), (1339, 476583), (2369, 269373), (4017, 158861), (6907, 92391), (7107, 89791), (20721, 30797)]