27728840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7789}}^1$

素因数の和:7889

約数の個数: 32

約数和(自身を含む): 63099000

約数和(自身を除く): 35370160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7789, 15578, 31156, 38945, 62312, 77890, 155780, 311560, 693221, 1386442, 2772884, 3466105, 5545768, 6932210, 13864420, 27728840]

約数ペア:

[(1, 27728840), (2, 13864420), (4, 6932210), (5, 5545768), (8, 3466105), (10, 2772884), (20, 1386442), (40, 693221), (89, 311560), (178, 155780), (356, 77890), (445, 62312), (712, 38945), (890, 31156), (1780, 15578), (3560, 7789)]