217420425

素因数分解:

$3^2\times 5^2\times {\mathrm{966313}}^1$

素因数の和:966329

約数の個数: 18

約数和(自身を含む): 389424542

約数和(自身を除く): 172004117

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 966313, 2898939, 4831565, 8696817, 14494695, 24157825, 43484085, 72473475, 217420425]

約数ペア:

[(1, 217420425), (3, 72473475), (5, 43484085), (9, 24157825), (15, 14494695), (25, 8696817), (45, 4831565), (75, 2898939), (225, 966313)]