64553260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{661}}^1$

素因数の和:946

約数の個数: 48

約数和(自身を含む): 143468640

約数和(自身を除く): 78915380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 257, 380, 514, 661, 1028, 1285, 1322, 2570, 2644, 3305, 4883, 5140, 6610, 9766, 12559, 13220, 19532, 24415, 25118, 48830, 50236, 62795, 97660, 125590, 169877, 251180, 339754, 679508, 849385, 1698770, 3227663, 3397540, 6455326, 12910652, 16138315, 32276630, 64553260]

約数ペア:

[(1, 64553260), (2, 32276630), (4, 16138315), (5, 12910652), (10, 6455326), (19, 3397540), (20, 3227663), (38, 1698770), (76, 849385), (95, 679508), (190, 339754), (257, 251180), (380, 169877), (514, 125590), (661, 97660), (1028, 62795), (1285, 50236), (1322, 48830), (2570, 25118), (2644, 24415), (3305, 19532), (4883, 13220), (5140, 12559), (6610, 9766)]