20219815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1811}}^1$

素因数の和:1863

約数の個数: 32

約数和(自身を含む): 31311360

約数和(自身を除く): 11091545

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 1811, 2233, 9055, 11165, 12677, 19921, 52519, 63385, 99605, 139447, 262595, 367633, 577709, 697235, 1838165, 2888545, 4043963, 20219815]

約数ペア:

[(1, 20219815), (5, 4043963), (7, 2888545), (11, 1838165), (29, 697235), (35, 577709), (55, 367633), (77, 262595), (145, 139447), (203, 99605), (319, 63385), (385, 52519), (1015, 19921), (1595, 12677), (1811, 11165), (2233, 9055)]