28009960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{63659}}^1$

素因数の和:63681

約数の個数: 32

約数和(自身を含む): 68752800

約数和(自身を除く): 40742840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 63659, 127318, 254636, 318295, 509272, 636590, 700249, 1273180, 1400498, 2546360, 2800996, 3501245, 5601992, 7002490, 14004980, 28009960]

約数ペア:

[(1, 28009960), (2, 14004980), (4, 7002490), (5, 5601992), (8, 3501245), (10, 2800996), (11, 2546360), (20, 1400498), (22, 1273180), (40, 700249), (44, 636590), (55, 509272), (88, 318295), (110, 254636), (220, 127318), (440, 63659)]