20153455

素因数分解:

$5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1913}}^1$

素因数の和:1975

約数の個数: 24

約数和(自身を含む): 28801872

約数和(自身を除く): 8648417

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 301, 1505, 1913, 2107, 9565, 10535, 13391, 66955, 82259, 93737, 411295, 468685, 575813, 2879065, 4030691, 20153455]

約数ペア:

[(1, 20153455), (5, 4030691), (7, 2879065), (35, 575813), (43, 468685), (49, 411295), (215, 93737), (245, 82259), (301, 66955), (1505, 13391), (1913, 10535), (2107, 9565)]