81880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:123

約数の個数: 32

約数和(自身を含む): 194400

約数和(自身を除く): 112520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 230, 356, 445, 460, 712, 890, 920, 1780, 2047, 3560, 4094, 8188, 10235, 16376, 20470, 40940, 81880]

約数ペア:

[(1, 81880), (2, 40940), (4, 20470), (5, 16376), (8, 10235), (10, 8188), (20, 4094), (23, 3560), (40, 2047), (46, 1780), (89, 920), (92, 890), (115, 712), (178, 460), (184, 445), (230, 356)]