30780405

素因数分解:

$3^4\times 5^1\times {\mathrm{76001}}^1$

素因数の和:76018

約数の個数: 20

約数和(自身を含む): 55177452

約数和(自身を除く): 24397047

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 76001, 228003, 380005, 684009, 1140015, 2052027, 3420045, 6156081, 10260135, 30780405]

約数ペア:

[(1, 30780405), (3, 10260135), (5, 6156081), (9, 3420045), (15, 2052027), (27, 1140015), (45, 684009), (81, 380005), (135, 228003), (405, 76001)]