821097

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:155

約数の個数: 24

約数和(自身を含む): 1281280

約数和(自身を除く): 460183

約数列:

[1, 3, 9, 27, 31, 81, 93, 109, 243, 279, 327, 837, 981, 2511, 2943, 3379, 7533, 8829, 10137, 26487, 30411, 91233, 273699, 821097]

約数ペア:

[(1, 821097), (3, 273699), (9, 91233), (27, 30411), (31, 26487), (81, 10137), (93, 8829), (109, 7533), (243, 3379), (279, 2943), (327, 2511), (837, 981)]