156705921

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{17749}}^1$

素因数の和:17870

約数の個数: 20

約数和(自身を含む): 236252500

約数和(自身を除く): 79546579

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 17749, 53247, 159741, 479223, 1437669, 1934641, 5803923, 17411769, 52235307, 156705921]

約数ペア:

[(1, 156705921), (3, 52235307), (9, 17411769), (27, 5803923), (81, 1934641), (109, 1437669), (327, 479223), (981, 159741), (2943, 53247), (8829, 17749)]