19781936

素因数分解:

$2^4\times {\mathrm{229}}^1\times {\mathrm{5399}}^1$

素因数の和:5636

約数の個数: 20

約数和(自身を含む): 38502000

約数和(自身を除く): 18720064

約数列:

[1, 2, 4, 8, 16, 229, 458, 916, 1832, 3664, 5399, 10798, 21596, 43192, 86384, 1236371, 2472742, 4945484, 9890968, 19781936]

約数ペア:

[(1, 19781936), (2, 9890968), (4, 4945484), (8, 2472742), (16, 1236371), (229, 86384), (458, 43192), (916, 21596), (1832, 10798), (3664, 5399)]