20487255

素因数分解:

$3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2111}}^1$

素因数の和:2766

約数の個数: 16

約数和(自身を含む): 32845824

約数和(自身を除く): 12358569

約数列:

[1, 3, 5, 15, 647, 1941, 2111, 3235, 6333, 9705, 10555, 31665, 1365817, 4097451, 6829085, 20487255]

約数ペア:

[(1, 20487255), (3, 6829085), (5, 4097451), (15, 1365817), (647, 31665), (1941, 10555), (2111, 9705), (3235, 6333)]