663619

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 16

約数和(自身を含む): 785664

約数和(自身を除く): 122045

約数列:

[1, 11, 23, 43, 61, 253, 473, 671, 989, 1403, 2623, 10879, 15433, 28853, 60329, 663619]

約数ペア:

[(1, 663619), (11, 60329), (23, 28853), (43, 15433), (61, 10879), (253, 2623), (473, 1403), (671, 989)]