15721804195

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{6997}}^1$

素因数の和:7255

約数の個数: 32

約数和(自身を含む): 19680615360

約数和(自身を除く): 3958811165

約数列:

[1, 5, 53, 61, 139, 265, 305, 695, 3233, 6997, 7367, 8479, 16165, 34985, 36835, 42395, 370841, 426817, 449387, 972583, 1854205, 2134085, 2246935, 4862915, 22621301, 51546899, 59327563, 113106505, 257734495, 296637815, 3144360839, 15721804195]

約数ペア:

[(1, 15721804195), (5, 3144360839), (53, 296637815), (61, 257734495), (139, 113106505), (265, 59327563), (305, 51546899), (695, 22621301), (3233, 4862915), (6997, 2246935), (7367, 2134085), (8479, 1854205), (16165, 972583), (34985, 449387), (36835, 426817), (42395, 370841)]