128781615

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{209401}}^1$

素因数の和:209450

約数の個数: 16

約数和(自身を含む): 211077216

約数和(自身を除く): 82295601

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 209401, 628203, 1047005, 3141015, 8585441, 25756323, 42927205, 128781615]

約数ペア:

[(1, 128781615), (3, 42927205), (5, 25756323), (15, 8585441), (41, 3141015), (123, 1047005), (205, 628203), (615, 209401)]