20859915

素因数分解:

$3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{3319}}^1$

素因数の和:3746

約数の個数: 16

約数和(自身を含む): 33465600

約数和(自身を除く): 12605685

約数列:

[1, 3, 5, 15, 419, 1257, 2095, 3319, 6285, 9957, 16595, 49785, 1390661, 4171983, 6953305, 20859915]

約数ペア:

[(1, 20859915), (3, 6953305), (5, 4171983), (15, 1390661), (419, 49785), (1257, 16595), (2095, 9957), (3319, 6285)]