640540173

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{12157}}^1$

素因数の和:12373

約数の個数: 32

約数和(自身を含む): 1056676096

約数和(自身を除く): 416135923

約数列:

[1, 3, 7, 13, 21, 39, 91, 193, 273, 579, 1351, 2509, 4053, 7527, 12157, 17563, 36471, 52689, 85099, 158041, 255297, 474123, 1106287, 2346301, 3318861, 7038903, 16424107, 30501913, 49272321, 91505739, 213513391, 640540173]

約数ペア:

[(1, 640540173), (3, 213513391), (7, 91505739), (13, 49272321), (21, 30501913), (39, 16424107), (91, 7038903), (193, 3318861), (273, 2346301), (579, 1106287), (1351, 474123), (2509, 255297), (4053, 158041), (7527, 85099), (12157, 52689), (17563, 36471)]