19518680

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1559}}^1$

素因数の和:1883

約数の個数: 32

約数和(自身を含む): 44085600

約数和(自身を除く): 24566920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1559, 1565, 2504, 3118, 3130, 6236, 6260, 7795, 12472, 12520, 15590, 31180, 62360, 487967, 975934, 1951868, 2439835, 3903736, 4879670, 9759340, 19518680]

約数ペア:

[(1, 19518680), (2, 9759340), (4, 4879670), (5, 3903736), (8, 2439835), (10, 1951868), (20, 975934), (40, 487967), (313, 62360), (626, 31180), (1252, 15590), (1559, 12520), (1565, 12472), (2504, 7795), (3118, 6260), (3130, 6236)]