20565381008

素因数分解:

$2^4\times {\mathrm{661}}^1\times {\mathrm{857}}^1\times {\mathrm{2269}}^1$

素因数の和:3795

約数の個数: 40

約数和(自身を含む): 39969878520

約数和(自身を除く): 19404497512

約数列:

[1, 2, 4, 8, 16, 661, 857, 1322, 1714, 2269, 2644, 3428, 4538, 5288, 6856, 9076, 10576, 13712, 18152, 36304, 566477, 1132954, 1499809, 1944533, 2265908, 2999618, 3889066, 4531816, 5999236, 7778132, 9063632, 11998472, 15556264, 23996944, 31112528, 1285336313, 2570672626, 5141345252, 10282690504, 20565381008]

約数ペア:

[(1, 20565381008), (2, 10282690504), (4, 5141345252), (8, 2570672626), (16, 1285336313), (661, 31112528), (857, 23996944), (1322, 15556264), (1714, 11998472), (2269, 9063632), (2644, 7778132), (3428, 5999236), (4538, 4531816), (5288, 3889066), (6856, 2999618), (9076, 2265908), (10576, 1944533), (13712, 1499809), (18152, 1132954), (36304, 566477)]