18047920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20509}}^1$

素因数の和:20533

約数の個数: 40

約数和(自身を含む): 45778320

約数和(自身を除く): 27730400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20509, 41018, 82036, 102545, 164072, 205090, 225599, 328144, 410180, 451198, 820360, 902396, 1127995, 1640720, 1804792, 2255990, 3609584, 4511980, 9023960, 18047920]

約数ペア:

[(1, 18047920), (2, 9023960), (4, 4511980), (5, 3609584), (8, 2255990), (10, 1804792), (11, 1640720), (16, 1127995), (20, 902396), (22, 820360), (40, 451198), (44, 410180), (55, 328144), (80, 225599), (88, 205090), (110, 164072), (176, 102545), (220, 82036), (440, 41018), (880, 20509)]