388777779

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{15173}}^1$

素因数の和:15268

約数の個数: 32

約数和(自身を含む): 628810560

約数和(自身を除く): 240032781

約数列:

[1, 3, 9, 13, 27, 39, 73, 117, 219, 351, 657, 949, 1971, 2847, 8541, 15173, 25623, 45519, 136557, 197249, 409671, 591747, 1107629, 1775241, 3322887, 5325723, 9968661, 14399177, 29905983, 43197531, 129592593, 388777779]

約数ペア:

[(1, 388777779), (3, 129592593), (9, 43197531), (13, 29905983), (27, 14399177), (39, 9968661), (73, 5325723), (117, 3322887), (219, 1775241), (351, 1107629), (657, 591747), (949, 409671), (1971, 197249), (2847, 136557), (8541, 45519), (15173, 25623)]