18271978

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1\times {\mathrm{503}}^1$

素因数の和:989

約数の個数: 16

約数和(自身を含む): 28195776

約数和(自身を除く): 9923798

約数列:

[1, 2, 41, 82, 443, 503, 886, 1006, 18163, 20623, 36326, 41246, 222829, 445658, 9135989, 18271978]

約数ペア:

[(1, 18271978), (2, 9135989), (41, 445658), (82, 222829), (443, 41246), (503, 36326), (886, 20623), (1006, 18163)]