20212755

素因数分解:

$3^1\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{1307}}^1$

素因数の和:2346

約数の個数: 16

約数和(自身を含む): 32396544

約数和(自身を除く): 12183789

約数列:

[1, 3, 5, 15, 1031, 1307, 3093, 3921, 5155, 6535, 15465, 19605, 1347517, 4042551, 6737585, 20212755]

約数ペア:

[(1, 20212755), (3, 6737585), (5, 4042551), (15, 1347517), (1031, 19605), (1307, 15465), (3093, 6535), (3921, 5155)]