19609209

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2221}}^1$

素因数の和:2342

約数の個数: 20

約数和(自身を含む): 29574820

約数和(自身を除く): 9965611

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2221, 2943, 6663, 8829, 19989, 59967, 179901, 242089, 726267, 2178801, 6536403, 19609209]

約数ペア:

[(1, 19609209), (3, 6536403), (9, 2178801), (27, 726267), (81, 242089), (109, 179901), (327, 59967), (981, 19989), (2221, 8829), (2943, 6663)]