81054080

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1423}}^1$

素因数の和:1531

約数の個数: 64

約数和(自身を含む): 196084800

約数和(自身を除く): 115030720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 320, 356, 445, 640, 712, 890, 1423, 1424, 1780, 2846, 2848, 3560, 5692, 5696, 7115, 7120, 11384, 11392, 14230, 14240, 22768, 28460, 28480, 45536, 56920, 56960, 91072, 113840, 126647, 182144, 227680, 253294, 455360, 506588, 633235, 910720, 1013176, 1266470, 2026352, 2532940, 4052704, 5065880, 8105408, 10131760, 16210816, 20263520, 40527040, 81054080]

約数ペア:

[(1, 81054080), (2, 40527040), (4, 20263520), (5, 16210816), (8, 10131760), (10, 8105408), (16, 5065880), (20, 4052704), (32, 2532940), (40, 2026352), (64, 1266470), (80, 1013176), (89, 910720), (128, 633235), (160, 506588), (178, 455360), (320, 253294), (356, 227680), (445, 182144), (640, 126647), (712, 113840), (890, 91072), (1423, 56960), (1424, 56920), (1780, 45536), (2846, 28480), (2848, 28460), (3560, 22768), (5692, 14240), (5696, 14230), (7115, 11392), (7120, 11384)]