18220685

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{271}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 26790912

約数和(自身を除く): 8570227

約数列:

[1, 5, 7, 17, 35, 85, 113, 119, 271, 565, 595, 791, 1355, 1897, 1921, 3955, 4607, 9485, 9605, 13447, 23035, 30623, 32249, 67235, 153115, 161245, 214361, 520591, 1071805, 2602955, 3644137, 18220685]

約数ペア:

[(1, 18220685), (5, 3644137), (7, 2602955), (17, 1071805), (35, 520591), (85, 214361), (113, 161245), (119, 153115), (271, 67235), (565, 32249), (595, 30623), (791, 23035), (1355, 13447), (1897, 9605), (1921, 9485), (3955, 4607)]