620174877

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1\times {\mathrm{1559}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 996403200

約数和(自身を除く): 376228323

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 997, 1559, 2991, 4677, 6979, 10913, 18943, 20937, 29621, 32739, 56829, 88863, 132601, 207347, 397803, 622041, 1554323, 4662969, 10880261, 29532137, 32640783, 88596411, 206724959, 620174877]

約数ペア:

[(1, 620174877), (3, 206724959), (7, 88596411), (19, 32640783), (21, 29532137), (57, 10880261), (133, 4662969), (399, 1554323), (997, 622041), (1559, 397803), (2991, 207347), (4677, 132601), (6979, 88863), (10913, 56829), (18943, 32739), (20937, 29621)]