80721025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2207}}^1$

素因数の和:2254

約数の個数: 48

約数和(自身を含む): 131420160

約数和(自身を除く): 50699135

約数列:

[1, 5, 7, 11, 19, 25, 35, 55, 77, 95, 133, 175, 209, 275, 385, 475, 665, 1045, 1463, 1925, 2207, 3325, 5225, 7315, 11035, 15449, 24277, 36575, 41933, 55175, 77245, 121385, 169939, 209665, 293531, 386225, 461263, 606925, 849695, 1048325, 1467655, 2306315, 3228841, 4248475, 7338275, 11531575, 16144205, 80721025]

約数ペア:

[(1, 80721025), (5, 16144205), (7, 11531575), (11, 7338275), (19, 4248475), (25, 3228841), (35, 2306315), (55, 1467655), (77, 1048325), (95, 849695), (133, 606925), (175, 461263), (209, 386225), (275, 293531), (385, 209665), (475, 169939), (665, 121385), (1045, 77245), (1463, 55175), (1925, 41933), (2207, 36575), (3325, 24277), (5225, 15449), (7315, 11035)]