21032500

素因数分解:

$2^2\times 5^4\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:250

約数の個数: 60

約数和(自身を含む): 47234880

約数和(自身を除く): 26202380

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 125, 179, 188, 235, 250, 358, 470, 500, 625, 716, 895, 940, 1175, 1250, 1790, 2350, 2500, 3580, 4475, 4700, 5875, 8413, 8950, 11750, 16826, 17900, 22375, 23500, 29375, 33652, 42065, 44750, 58750, 84130, 89500, 111875, 117500, 168260, 210325, 223750, 420650, 447500, 841300, 1051625, 2103250, 4206500, 5258125, 10516250, 21032500]

約数ペア:

[(1, 21032500), (2, 10516250), (4, 5258125), (5, 4206500), (10, 2103250), (20, 1051625), (25, 841300), (47, 447500), (50, 420650), (94, 223750), (100, 210325), (125, 168260), (179, 117500), (188, 111875), (235, 89500), (250, 84130), (358, 58750), (470, 44750), (500, 42065), (625, 33652), (716, 29375), (895, 23500), (940, 22375), (1175, 17900), (1250, 16826), (1790, 11750), (2350, 8950), (2500, 8413), (3580, 5875), (4475, 4700)]