20053965

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78643}}^1$

素因数の和:78668

約数の個数: 16

約数和(自身を含む): 33974208

約数和(自身を除く): 13920243

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78643, 235929, 393215, 1179645, 1336931, 4010793, 6684655, 20053965]

約数ペア:

[(1, 20053965), (3, 6684655), (5, 4010793), (15, 1336931), (17, 1179645), (51, 393215), (85, 235929), (255, 78643)]