20168109

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:311

約数の個数: 40

約数和(自身を含む): 32931360

約数和(自身を除く): 12763251

約数列:

[1, 3, 9, 13, 27, 39, 81, 107, 117, 179, 321, 351, 537, 963, 1053, 1391, 1611, 2327, 2889, 4173, 4833, 6981, 8667, 12519, 14499, 19153, 20943, 37557, 57459, 62829, 112671, 172377, 188487, 248989, 517131, 746967, 1551393, 2240901, 6722703, 20168109]

約数ペア:

[(1, 20168109), (3, 6722703), (9, 2240901), (13, 1551393), (27, 746967), (39, 517131), (81, 248989), (107, 188487), (117, 172377), (179, 112671), (321, 62829), (351, 57459), (537, 37557), (963, 20943), (1053, 19153), (1391, 14499), (1611, 12519), (2327, 8667), (2889, 6981), (4173, 4833)]