18418550

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4139}}^1$

素因数の和:4240

約数の個数: 24

約数和(自身を含む): 34651800

約数和(自身を除く): 16233250

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4139, 4450, 8278, 20695, 41390, 103475, 206950, 368371, 736742, 1841855, 3683710, 9209275, 18418550]

約数ペア:

[(1, 18418550), (2, 9209275), (5, 3683710), (10, 1841855), (25, 736742), (50, 368371), (89, 206950), (178, 103475), (445, 41390), (890, 20695), (2225, 8278), (4139, 4450)]