18138200

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1019}}^1$

素因数の和:1124

約数の個数: 48

約数和(自身を含む): 42687000

約数和(自身を除く): 24548800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1019, 1780, 2038, 2225, 3560, 4076, 4450, 5095, 8152, 8900, 10190, 17800, 20380, 25475, 40760, 50950, 90691, 101900, 181382, 203800, 362764, 453455, 725528, 906910, 1813820, 2267275, 3627640, 4534550, 9069100, 18138200]

約数ペア:

[(1, 18138200), (2, 9069100), (4, 4534550), (5, 3627640), (8, 2267275), (10, 1813820), (20, 906910), (25, 725528), (40, 453455), (50, 362764), (89, 203800), (100, 181382), (178, 101900), (200, 90691), (356, 50950), (445, 40760), (712, 25475), (890, 20380), (1019, 17800), (1780, 10190), (2038, 8900), (2225, 8152), (3560, 5095), (4076, 4450)]