21508995

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{84349}}^1$

素因数の和:84374

約数の個数: 16

約数和(自身を含む): 36439200

約数和(自身を除く): 14930205

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 84349, 253047, 421745, 1265235, 1433933, 4301799, 7169665, 21508995]

約数ペア:

[(1, 21508995), (3, 7169665), (5, 4301799), (15, 1433933), (17, 1265235), (51, 421745), (85, 253047), (255, 84349)]