20712405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{197261}}^1$

素因数の和:197276

約数の個数: 16

約数和(自身を含む): 37874304

約数和(自身を除く): 17161899

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 197261, 591783, 986305, 1380827, 2958915, 4142481, 6904135, 20712405]

約数ペア:

[(1, 20712405), (3, 6904135), (5, 4142481), (7, 2958915), (15, 1380827), (21, 986305), (35, 591783), (105, 197261)]