20216315

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 29890944

約数和(自身を除く): 9674629

約数列:

[1, 5, 7, 17, 35, 61, 85, 119, 305, 427, 557, 595, 1037, 2135, 2785, 3899, 5185, 7259, 9469, 19495, 33977, 36295, 47345, 66283, 169885, 237839, 331415, 577609, 1189195, 2888045, 4043263, 20216315]

約数ペア:

[(1, 20216315), (5, 4043263), (7, 2888045), (17, 1189195), (35, 577609), (61, 331415), (85, 237839), (119, 169885), (305, 66283), (427, 47345), (557, 36295), (595, 33977), (1037, 19495), (2135, 9469), (2785, 7259), (3899, 5185)]