215971275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{221509}}^1$

素因数の和:221535

約数の個数: 24

約数和(自身を含む): 384541360

約数和(自身を除く): 168570085

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 221509, 664527, 1107545, 2879617, 3322635, 5537725, 8638851, 14398085, 16613175, 43194255, 71990425, 215971275]

約数ペア:

[(1, 215971275), (3, 71990425), (5, 43194255), (13, 16613175), (15, 14398085), (25, 8638851), (39, 5537725), (65, 3322635), (75, 2879617), (195, 1107545), (325, 664527), (975, 221509)]