18237680

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{823}}^1$

素因数の和:1113

約数の個数: 40

約数和(自身を含む): 42607392

約数和(自身を除く): 24369712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 823, 1108, 1385, 1646, 2216, 2770, 3292, 4115, 4432, 5540, 6584, 8230, 11080, 13168, 16460, 22160, 32920, 65840, 227971, 455942, 911884, 1139855, 1823768, 2279710, 3647536, 4559420, 9118840, 18237680]

約数ペア:

[(1, 18237680), (2, 9118840), (4, 4559420), (5, 3647536), (8, 2279710), (10, 1823768), (16, 1139855), (20, 911884), (40, 455942), (80, 227971), (277, 65840), (554, 32920), (823, 22160), (1108, 16460), (1385, 13168), (1646, 11080), (2216, 8230), (2770, 6584), (3292, 5540), (4115, 4432)]