20992503

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21269}}^1$

素因数の和:21326

約数の個数: 16

約数和(自身を含む): 32670720

約数和(自身を除く): 11678217

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21269, 63807, 148883, 446649, 999643, 2998929, 6997501, 20992503]

約数ペア:

[(1, 20992503), (3, 6997501), (7, 2998929), (21, 999643), (47, 446649), (141, 148883), (329, 63807), (987, 21269)]