231799180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 493920000

約数和(自身を除く): 262120820

約数列:

[1, 2, 4, 5, 10, 20, 139, 199, 278, 398, 419, 556, 695, 796, 838, 995, 1390, 1676, 1990, 2095, 2780, 3980, 4190, 8380, 27661, 55322, 58241, 83381, 110644, 116482, 138305, 166762, 232964, 276610, 291205, 333524, 416905, 553220, 582410, 833810, 1164820, 1667620, 11589959, 23179918, 46359836, 57949795, 115899590, 231799180]

約数ペア:

[(1, 231799180), (2, 115899590), (4, 57949795), (5, 46359836), (10, 23179918), (20, 11589959), (139, 1667620), (199, 1164820), (278, 833810), (398, 582410), (419, 553220), (556, 416905), (695, 333524), (796, 291205), (838, 276610), (995, 232964), (1390, 166762), (1676, 138305), (1990, 116482), (2095, 110644), (2780, 83381), (3980, 58241), (4190, 55322), (8380, 27661)]