20215618075

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1\times {\mathrm{1607}}^1$

素因数の和:1864

約数の個数: 48

約数和(自身を含む): 26072099136

約数和(自身を除く): 5856481061

約数列:

[1, 5, 25, 61, 73, 113, 305, 365, 565, 1525, 1607, 1825, 2825, 4453, 6893, 8035, 8249, 22265, 34465, 40175, 41245, 98027, 111325, 117311, 172325, 181591, 206225, 490135, 503189, 586555, 907955, 2450675, 2515945, 2932775, 4539775, 7155971, 11077051, 12579725, 13256143, 35779855, 55385255, 66280715, 178899275, 276926275, 331403575, 808624723, 4043123615, 20215618075]

約数ペア:

[(1, 20215618075), (5, 4043123615), (25, 808624723), (61, 331403575), (73, 276926275), (113, 178899275), (305, 66280715), (365, 55385255), (565, 35779855), (1525, 13256143), (1607, 12579725), (1825, 11077051), (2825, 7155971), (4453, 4539775), (6893, 2932775), (8035, 2515945), (8249, 2450675), (22265, 907955), (34465, 586555), (40175, 503189), (41245, 490135), (98027, 206225), (111325, 181591), (117311, 172325)]