19440820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{138863}}^1$

素因数の和:138879

約数の個数: 24

約数和(自身を含む): 46658304

約数和(自身を除く): 27217484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 138863, 277726, 555452, 694315, 972041, 1388630, 1944082, 2777260, 3888164, 4860205, 9720410, 19440820]

約数ペア:

[(1, 19440820), (2, 9720410), (4, 4860205), (5, 3888164), (7, 2777260), (10, 1944082), (14, 1388630), (20, 972041), (28, 694315), (35, 555452), (70, 277726), (140, 138863)]