78813220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64601}}^1$

素因数の和:64671

約数の個数: 24

約数和(自身を含む): 168223608

約数和(自身を除く): 89410388

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64601, 129202, 258404, 323005, 646010, 1292020, 3940661, 7881322, 15762644, 19703305, 39406610, 78813220]

約数ペア:

[(1, 78813220), (2, 39406610), (4, 19703305), (5, 15762644), (10, 7881322), (20, 3940661), (61, 1292020), (122, 646010), (244, 323005), (305, 258404), (610, 129202), (1220, 64601)]