2011400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 4770900

約数和(自身を除く): 2759500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 113, 178, 200, 226, 356, 445, 452, 565, 712, 890, 904, 1130, 1780, 2225, 2260, 2825, 3560, 4450, 4520, 5650, 8900, 10057, 11300, 17800, 20114, 22600, 40228, 50285, 80456, 100570, 201140, 251425, 402280, 502850, 1005700, 2011400]

約数ペア:

[(1, 2011400), (2, 1005700), (4, 502850), (5, 402280), (8, 251425), (10, 201140), (20, 100570), (25, 80456), (40, 50285), (50, 40228), (89, 22600), (100, 20114), (113, 17800), (178, 11300), (200, 10057), (226, 8900), (356, 5650), (445, 4520), (452, 4450), (565, 3560), (712, 2825), (890, 2260), (904, 2225), (1130, 1780)]