18909838

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1\times {\mathrm{271}}^1$

素因数の和:663

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 9878642

約数列:

[1, 2, 139, 251, 271, 278, 502, 542, 34889, 37669, 68021, 69778, 75338, 136042, 9454919, 18909838]

約数ペア:

[(1, 18909838), (2, 9454919), (139, 136042), (251, 75338), (271, 69778), (278, 68021), (502, 37669), (542, 34889)]