81331770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1949}}^1$

素因数の和:2079

約数の個数: 64

約数和(自身を含む): 212284800

約数和(自身を除く): 130953030

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 107, 130, 195, 214, 321, 390, 535, 642, 1070, 1391, 1605, 1949, 2782, 3210, 3898, 4173, 5847, 6955, 8346, 9745, 11694, 13910, 19490, 20865, 25337, 29235, 41730, 50674, 58470, 76011, 126685, 152022, 208543, 253370, 380055, 417086, 625629, 760110, 1042715, 1251258, 2085430, 2711059, 3128145, 5422118, 6256290, 8133177, 13555295, 16266354, 27110590, 40665885, 81331770]

約数ペア:

[(1, 81331770), (2, 40665885), (3, 27110590), (5, 16266354), (6, 13555295), (10, 8133177), (13, 6256290), (15, 5422118), (26, 3128145), (30, 2711059), (39, 2085430), (65, 1251258), (78, 1042715), (107, 760110), (130, 625629), (195, 417086), (214, 380055), (321, 253370), (390, 208543), (535, 152022), (642, 126685), (1070, 76011), (1391, 58470), (1605, 50674), (1949, 41730), (2782, 29235), (3210, 25337), (3898, 20865), (4173, 19490), (5847, 13910), (6955, 11694), (8346, 9745)]