640185

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:102

約数の個数: 48

約数和(自身を含む): 1302336

約数和(自身を除く): 662151

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 67, 91, 105, 147, 195, 201, 245, 273, 335, 455, 469, 637, 735, 871, 1005, 1365, 1407, 1911, 2345, 2613, 3185, 3283, 4355, 6097, 7035, 9555, 9849, 13065, 16415, 18291, 30485, 42679, 49245, 91455, 128037, 213395, 640185]

約数ペア:

[(1, 640185), (3, 213395), (5, 128037), (7, 91455), (13, 49245), (15, 42679), (21, 30485), (35, 18291), (39, 16415), (49, 13065), (65, 9849), (67, 9555), (91, 7035), (105, 6097), (147, 4355), (195, 3283), (201, 3185), (245, 2613), (273, 2345), (335, 1911), (455, 1407), (469, 1365), (637, 1005), (735, 871)]