20385261

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 34607664

約数和(自身を除く): 14222403

約数列:

[1, 3, 9, 13, 17, 37, 39, 51, 111, 117, 153, 221, 277, 333, 481, 629, 663, 831, 1443, 1887, 1989, 2493, 3601, 4329, 4709, 5661, 8177, 10249, 10803, 14127, 24531, 30747, 32409, 42381, 61217, 73593, 92241, 133237, 174233, 183651, 399711, 522699, 550953, 1199133, 1568097, 2265029, 6795087, 20385261]

約数ペア:

[(1, 20385261), (3, 6795087), (9, 2265029), (13, 1568097), (17, 1199133), (37, 550953), (39, 522699), (51, 399711), (111, 183651), (117, 174233), (153, 133237), (221, 92241), (277, 73593), (333, 61217), (481, 42381), (629, 32409), (663, 30747), (831, 24531), (1443, 14127), (1887, 10803), (1989, 10249), (2493, 8177), (3601, 5661), (4329, 4709)]