3997880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1223

約数の個数: 32

約数和(自身を含む): 9104400

約数和(自身を除く): 5106520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1123, 1780, 2246, 3560, 4492, 5615, 8984, 11230, 22460, 44920, 99947, 199894, 399788, 499735, 799576, 999470, 1998940, 3997880]

約数ペア:

[(1, 3997880), (2, 1998940), (4, 999470), (5, 799576), (8, 499735), (10, 399788), (20, 199894), (40, 99947), (89, 44920), (178, 22460), (356, 11230), (445, 8984), (712, 5615), (890, 4492), (1123, 3560), (1780, 2246)]