20805365

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{479}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 30689280

約数和(自身を除く): 9883915

約数列:

[1, 5, 7, 17, 35, 73, 85, 119, 365, 479, 511, 595, 1241, 2395, 2555, 3353, 6205, 8143, 8687, 16765, 34967, 40715, 43435, 57001, 174835, 244769, 285005, 594439, 1223845, 2972195, 4161073, 20805365]

約数ペア:

[(1, 20805365), (5, 4161073), (7, 2972195), (17, 1223845), (35, 594439), (73, 285005), (85, 244769), (119, 174835), (365, 57001), (479, 43435), (511, 40715), (595, 34967), (1241, 16765), (2395, 8687), (2555, 8143), (3353, 6205)]