19660100

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^2\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 54

約数和(自身を含む): 44079210

約数和(自身を除く): 24419110

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 89, 94, 100, 178, 188, 235, 356, 445, 470, 890, 940, 1175, 1780, 2209, 2225, 2350, 4183, 4418, 4450, 4700, 8366, 8836, 8900, 11045, 16732, 20915, 22090, 41830, 44180, 55225, 83660, 104575, 110450, 196601, 209150, 220900, 393202, 418300, 786404, 983005, 1966010, 3932020, 4915025, 9830050, 19660100]

約数ペア:

[(1, 19660100), (2, 9830050), (4, 4915025), (5, 3932020), (10, 1966010), (20, 983005), (25, 786404), (47, 418300), (50, 393202), (89, 220900), (94, 209150), (100, 196601), (178, 110450), (188, 104575), (235, 83660), (356, 55225), (445, 44180), (470, 41830), (890, 22090), (940, 20915), (1175, 16732), (1780, 11045), (2209, 8900), (2225, 8836), (2350, 8366), (4183, 4700), (4418, 4450)]