20327500

素因数分解:

$2^2\times 5^4\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 60

約数和(自身を含む): 45660384

約数和(自身を除く): 25332884

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 125, 173, 188, 235, 250, 346, 470, 500, 625, 692, 865, 940, 1175, 1250, 1730, 2350, 2500, 3460, 4325, 4700, 5875, 8131, 8650, 11750, 16262, 17300, 21625, 23500, 29375, 32524, 40655, 43250, 58750, 81310, 86500, 108125, 117500, 162620, 203275, 216250, 406550, 432500, 813100, 1016375, 2032750, 4065500, 5081875, 10163750, 20327500]

約数ペア:

[(1, 20327500), (2, 10163750), (4, 5081875), (5, 4065500), (10, 2032750), (20, 1016375), (25, 813100), (47, 432500), (50, 406550), (94, 216250), (100, 203275), (125, 162620), (173, 117500), (188, 108125), (235, 86500), (250, 81310), (346, 58750), (470, 43250), (500, 40655), (625, 32524), (692, 29375), (865, 23500), (940, 21625), (1175, 17300), (1250, 16262), (1730, 11750), (2350, 8650), (2500, 8131), (3460, 5875), (4325, 4700)]