647139321

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{3917}}^1$

素因数の和:4166

約数の個数: 32

約数和(自身を含む): 996739200

約数和(自身を除く): 349599879

約数列:

[1, 3, 9, 27, 29, 87, 211, 261, 633, 783, 1899, 3917, 5697, 6119, 11751, 18357, 35253, 55071, 105759, 113593, 165213, 340779, 826487, 1022337, 2479461, 3067011, 7438383, 22315149, 23968123, 71904369, 215713107, 647139321]

約数ペア:

[(1, 647139321), (3, 215713107), (9, 71904369), (27, 23968123), (29, 22315149), (87, 7438383), (211, 3067011), (261, 2479461), (633, 1022337), (783, 826487), (1899, 340779), (3917, 165213), (5697, 113593), (6119, 105759), (11751, 55071), (18357, 35253)]