85213215

素因数分解:

$3^4\times 5^1\times {\mathrm{210403}}^1$

素因数の和:210420

約数の個数: 20

約数和(自身を含む): 152753304

約数和(自身を除く): 67540089

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 210403, 631209, 1052015, 1893627, 3156045, 5680881, 9468135, 17042643, 28404405, 85213215]

約数ペア:

[(1, 85213215), (3, 28404405), (5, 17042643), (9, 9468135), (15, 5680881), (27, 3156045), (45, 1893627), (81, 1052015), (135, 631209), (405, 210403)]