20671915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{22109}}^1$

素因数の和:22142

約数の個数: 16

約数和(自身を含む): 28654560

約数和(自身を除く): 7982645

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 22109, 110545, 243199, 375853, 1215995, 1879265, 4134383, 20671915]

約数ペア:

[(1, 20671915), (5, 4134383), (11, 1879265), (17, 1215995), (55, 375853), (85, 243199), (187, 110545), (935, 22109)]