28489221

素因数分解:

$3^2\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 42059160

約数和(自身を除く): 13569939

約数列:

[1, 3, 9, 109, 113, 257, 327, 339, 771, 981, 1017, 2313, 12317, 28013, 29041, 36951, 84039, 87123, 110853, 252117, 261369, 3165469, 9496407, 28489221]

約数ペア:

[(1, 28489221), (3, 9496407), (9, 3165469), (109, 261369), (113, 252117), (257, 110853), (327, 87123), (339, 84039), (771, 36951), (981, 29041), (1017, 28013), (2313, 12317)]