20757255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{81401}}^1$

素因数の和:81426

約数の個数: 16

約数和(自身を含む): 35165664

約数和(自身を除く): 14408409

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 81401, 244203, 407005, 1221015, 1383817, 4151451, 6919085, 20757255]

約数ペア:

[(1, 20757255), (3, 6919085), (5, 4151451), (15, 1383817), (17, 1221015), (51, 407005), (85, 244203), (255, 81401)]