18336440

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{823}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 41381280

約数和(自身を除く): 23044840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 823, 1114, 1646, 2228, 2785, 3292, 4115, 4456, 5570, 6584, 8230, 11140, 16460, 22280, 32920, 458411, 916822, 1833644, 2292055, 3667288, 4584110, 9168220, 18336440]

約数ペア:

[(1, 18336440), (2, 9168220), (4, 4584110), (5, 3667288), (8, 2292055), (10, 1833644), (20, 916822), (40, 458411), (557, 32920), (823, 22280), (1114, 16460), (1646, 11140), (2228, 8230), (2785, 6584), (3292, 5570), (4115, 4456)]