219561880

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{54347}}^1$

素因数の和:54459

約数の個数: 32

約数和(自身を含む): 498914640

約数和(自身を除く): 279352760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 54347, 108694, 217388, 271735, 434776, 543470, 1086940, 2173880, 5489047, 10978094, 21956188, 27445235, 43912376, 54890470, 109780940, 219561880]

約数ペア:

[(1, 219561880), (2, 109780940), (4, 54890470), (5, 43912376), (8, 27445235), (10, 21956188), (20, 10978094), (40, 5489047), (101, 2173880), (202, 1086940), (404, 543470), (505, 434776), (808, 271735), (1010, 217388), (2020, 108694), (4040, 54347)]