18000680

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1447}}^1$

素因数の和:1769

約数の個数: 32

約数和(自身を含む): 40659840

約数和(自身を除く): 22659160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1447, 1555, 2488, 2894, 3110, 5788, 6220, 7235, 11576, 12440, 14470, 28940, 57880, 450017, 900034, 1800068, 2250085, 3600136, 4500170, 9000340, 18000680]

約数ペア:

[(1, 18000680), (2, 9000340), (4, 4500170), (5, 3600136), (8, 2250085), (10, 1800068), (20, 900034), (40, 450017), (311, 57880), (622, 28940), (1244, 14470), (1447, 12440), (1555, 11576), (2488, 7235), (2894, 6220), (3110, 5788)]