20129500

素因数分解:

$2^2\times 5^3\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:463

約数の個数: 48

約数和(自身を含む): 44448768

約数和(自身を除く): 24319268

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 127, 250, 254, 317, 500, 508, 634, 635, 1268, 1270, 1585, 2540, 3170, 3175, 6340, 6350, 7925, 12700, 15850, 15875, 31700, 31750, 39625, 40259, 63500, 79250, 80518, 158500, 161036, 201295, 402590, 805180, 1006475, 2012950, 4025900, 5032375, 10064750, 20129500]

約数ペア:

[(1, 20129500), (2, 10064750), (4, 5032375), (5, 4025900), (10, 2012950), (20, 1006475), (25, 805180), (50, 402590), (100, 201295), (125, 161036), (127, 158500), (250, 80518), (254, 79250), (317, 63500), (500, 40259), (508, 39625), (634, 31750), (635, 31700), (1268, 15875), (1270, 15850), (1585, 12700), (2540, 7925), (3170, 6350), (3175, 6340)]