3969400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 9374400

約数和(自身を除く): 5405000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 223, 356, 445, 446, 712, 890, 892, 1115, 1780, 1784, 2225, 2230, 3560, 4450, 4460, 5575, 8900, 8920, 11150, 17800, 19847, 22300, 39694, 44600, 79388, 99235, 158776, 198470, 396940, 496175, 793880, 992350, 1984700, 3969400]

約数ペア:

[(1, 3969400), (2, 1984700), (4, 992350), (5, 793880), (8, 496175), (10, 396940), (20, 198470), (25, 158776), (40, 99235), (50, 79388), (89, 44600), (100, 39694), (178, 22300), (200, 19847), (223, 17800), (356, 11150), (445, 8920), (446, 8900), (712, 5575), (890, 4460), (892, 4450), (1115, 3560), (1780, 2230), (1784, 2225)]