15202120

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{977}}^1$

素因数の和:1377

約数の個数: 32

約数和(自身を含む): 34327800

約数和(自身を除く): 19125680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 977, 1556, 1945, 1954, 3112, 3890, 3908, 4885, 7780, 7816, 9770, 15560, 19540, 39080, 380053, 760106, 1520212, 1900265, 3040424, 3800530, 7601060, 15202120]

約数ペア:

[(1, 15202120), (2, 7601060), (4, 3800530), (5, 3040424), (8, 1900265), (10, 1520212), (20, 760106), (40, 380053), (389, 39080), (778, 19540), (977, 15560), (1556, 9770), (1945, 7816), (1954, 7780), (3112, 4885), (3890, 3908)]