20123345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4111}}^1$

素因数の和:4216

約数の個数: 16

約数和(自身を含む): 26645760

約数和(自身を除く): 6522415

約数列:

[1, 5, 11, 55, 89, 445, 979, 4111, 4895, 20555, 45221, 226105, 365879, 1829395, 4024669, 20123345]

約数ペア:

[(1, 20123345), (5, 4024669), (11, 1829395), (55, 365879), (89, 226105), (445, 45221), (979, 20555), (4111, 4895)]