19657940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{33893}}^1$

素因数の和:33931

約数の個数: 24

約数和(自身を含む): 42706440

約数和(自身を除く): 23048500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 33893, 67786, 135572, 169465, 338930, 677860, 982897, 1965794, 3931588, 4914485, 9828970, 19657940]

約数ペア:

[(1, 19657940), (2, 9828970), (4, 4914485), (5, 3931588), (10, 1965794), (20, 982897), (29, 677860), (58, 338930), (116, 169465), (145, 135572), (290, 67786), (580, 33893)]