642516879

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 892387584

約数和(自身を除く): 249870705

約数列:

[1, 3, 43, 129, 131, 193, 197, 393, 579, 591, 5633, 8299, 8471, 16899, 24897, 25283, 25413, 25807, 38021, 75849, 77421, 114063, 1087169, 1109701, 1634903, 3261507, 3329103, 4904709, 4980751, 14942253, 214172293, 642516879]

約数ペア:

[(1, 642516879), (3, 214172293), (43, 14942253), (129, 4980751), (131, 4904709), (193, 3329103), (197, 3261507), (393, 1634903), (579, 1109701), (591, 1087169), (5633, 114063), (8299, 77421), (8471, 75849), (16899, 38021), (24897, 25807), (25283, 25413)]