394215

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 647136

約数和(自身を除く): 252921

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 641, 1923, 3205, 9615, 26281, 78843, 131405, 394215]

約数ペア:

[(1, 394215), (3, 131405), (5, 78843), (15, 26281), (41, 9615), (123, 3205), (205, 1923), (615, 641)]