20100171

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 35997696

約数和(自身を除く): 15897525

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 61, 71, 91, 119, 183, 213, 221, 273, 357, 427, 497, 663, 793, 923, 1037, 1207, 1281, 1491, 1547, 2379, 2769, 3111, 3621, 4331, 4641, 5551, 6461, 7259, 8449, 12993, 13481, 15691, 16653, 19383, 21777, 25347, 30317, 40443, 47073, 56303, 73627, 90951, 94367, 109837, 168909, 220881, 283101, 329511, 394121, 515389, 957151, 1182363, 1546167, 2871453, 6700057, 20100171]

約数ペア:

[(1, 20100171), (3, 6700057), (7, 2871453), (13, 1546167), (17, 1182363), (21, 957151), (39, 515389), (51, 394121), (61, 329511), (71, 283101), (91, 220881), (119, 168909), (183, 109837), (213, 94367), (221, 90951), (273, 73627), (357, 56303), (427, 47073), (497, 40443), (663, 30317), (793, 25347), (923, 21777), (1037, 19383), (1207, 16653), (1281, 15691), (1491, 13481), (1547, 12993), (2379, 8449), (2769, 7259), (3111, 6461), (3621, 5551), (4331, 4641)]