201521109

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{11959}}^1$

素因数の和:12140

約数の個数: 16

約数和(自身を含む): 277280640

約数和(自身を除く): 75759531

約数列:

[1, 3, 41, 123, 137, 411, 5617, 11959, 16851, 35877, 490319, 1470957, 1638383, 4915149, 67173703, 201521109]

約数ペア:

[(1, 201521109), (3, 67173703), (41, 4915149), (123, 1638383), (137, 1470957), (411, 490319), (5617, 35877), (11959, 16851)]