20553785

素因数分解:

$5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1951}}^1$

素因数の和:2013

約数の個数: 24

約数和(自身を含む): 29373696

約数和(自身を除く): 8819911

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 301, 1505, 1951, 2107, 9755, 10535, 13657, 68285, 83893, 95599, 419465, 477995, 587251, 2936255, 4110757, 20553785]

約数ペア:

[(1, 20553785), (5, 4110757), (7, 2936255), (35, 587251), (43, 477995), (49, 419465), (215, 95599), (245, 83893), (301, 68285), (1505, 13657), (1951, 10535), (2107, 9755)]