18867920

素因数分解:

$2^4\times 5^1\times {\mathrm{235849}}^1$

素因数の和:235862

約数の個数: 20

約数和(自身を含む): 43868100

約数和(自身を除く): 25000180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235849, 471698, 943396, 1179245, 1886792, 2358490, 3773584, 4716980, 9433960, 18867920]

約数ペア:

[(1, 18867920), (2, 9433960), (4, 4716980), (5, 3773584), (8, 2358490), (10, 1886792), (16, 1179245), (20, 943396), (40, 471698), (80, 235849)]