20705265

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65731}}^1$

素因数の和:65749

約数の個数: 24

約数和(自身を含む): 41016768

約数和(自身を除く): 20311503

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65731, 197193, 328655, 460117, 591579, 985965, 1380351, 2300585, 2957895, 4141053, 6901755, 20705265]

約数ペア:

[(1, 20705265), (3, 6901755), (5, 4141053), (7, 2957895), (9, 2300585), (15, 1380351), (21, 985965), (35, 591579), (45, 460117), (63, 328655), (105, 197193), (315, 65731)]