20907145

素因数分解:

$5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{929}}^1$

素因数の和:1584

約数の個数: 16

約数和(自身を含む): 28748160

約数和(自身を除く): 7841015

約数列:

[1, 5, 7, 35, 643, 929, 3215, 4501, 4645, 6503, 22505, 32515, 597347, 2986735, 4181429, 20907145]

約数ペア:

[(1, 20907145), (5, 4181429), (7, 2986735), (35, 597347), (643, 32515), (929, 22505), (3215, 6503), (4501, 4645)]