19983902

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{2053}}^1$

素因数の和:2243

約数の個数: 16

約数和(自身を含む): 31155072

約数和(自身を除く): 11171170

約数列:

[1, 2, 31, 62, 157, 314, 2053, 4106, 4867, 9734, 63643, 127286, 322321, 644642, 9991951, 19983902]

約数ペア:

[(1, 19983902), (2, 9991951), (31, 644642), (62, 322321), (157, 127286), (314, 63643), (2053, 9734), (4106, 4867)]