20989045

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54517}}^1$

素因数の和:54540

約数の個数: 16

約数和(自身を含む): 31402368

約数和(自身を除く): 10413323

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54517, 272585, 381619, 599687, 1908095, 2998435, 4197809, 20989045]

約数ペア:

[(1, 20989045), (5, 4197809), (7, 2998435), (11, 1908095), (35, 599687), (55, 381619), (77, 272585), (385, 54517)]