21085960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75307}}^1$

素因数の和:75325

約数の個数: 32

約数和(自身を含む): 54221760

約数和(自身を除く): 33135800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75307, 150614, 301228, 376535, 527149, 602456, 753070, 1054298, 1506140, 2108596, 2635745, 3012280, 4217192, 5271490, 10542980, 21085960]

約数ペア:

[(1, 21085960), (2, 10542980), (4, 5271490), (5, 4217192), (7, 3012280), (8, 2635745), (10, 2108596), (14, 1506140), (20, 1054298), (28, 753070), (35, 602456), (40, 527149), (56, 376535), (70, 301228), (140, 150614), (280, 75307)]