20511568

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{16649}}^1$

素因数の和:16675

約数の個数: 40

約数和(自身を含む): 49550400

約数和(自身を除く): 29038832

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 16649, 33298, 66596, 116543, 133192, 183139, 233086, 266384, 366278, 466172, 732556, 932344, 1281973, 1465112, 1864688, 2563946, 2930224, 5127892, 10255784, 20511568]

約数ペア:

[(1, 20511568), (2, 10255784), (4, 5127892), (7, 2930224), (8, 2563946), (11, 1864688), (14, 1465112), (16, 1281973), (22, 932344), (28, 732556), (44, 466172), (56, 366278), (77, 266384), (88, 233086), (112, 183139), (154, 133192), (176, 116543), (308, 66596), (616, 33298), (1232, 16649)]