20319985

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7349}}^1$

素因数の和:7440

約数の個数: 16

約数和(自身を含む): 28224000

約数和(自身を除く): 7904015

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 7349, 36745, 51443, 257215, 580571, 2902855, 4063997, 20319985]

約数ペア:

[(1, 20319985), (5, 4063997), (7, 2902855), (35, 580571), (79, 257215), (395, 51443), (553, 36745), (2765, 7349)]