20010081

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 34448064

約数和(自身を除く): 14437983

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 283, 481, 637, 777, 849, 1443, 1813, 1911, 1981, 3367, 3679, 5439, 5943, 10101, 10471, 11037, 13867, 23569, 25753, 31413, 41601, 70707, 73297, 77259, 136123, 180271, 219891, 408369, 513079, 540813, 952861, 1539237, 2858583, 6670027, 20010081]

約数ペア:

[(1, 20010081), (3, 6670027), (7, 2858583), (13, 1539237), (21, 952861), (37, 540813), (39, 513079), (49, 408369), (91, 219891), (111, 180271), (147, 136123), (259, 77259), (273, 73297), (283, 70707), (481, 41601), (637, 31413), (777, 25753), (849, 23569), (1443, 13867), (1813, 11037), (1911, 10471), (1981, 10101), (3367, 5943), (3679, 5439)]