11879720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 27993600

約数和(自身を除く): 16113880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 89, 94, 142, 178, 188, 235, 284, 355, 356, 376, 445, 470, 568, 710, 712, 890, 940, 1420, 1780, 1880, 2840, 3337, 3560, 4183, 6319, 6674, 8366, 12638, 13348, 16685, 16732, 20915, 25276, 26696, 31595, 33370, 33464, 41830, 50552, 63190, 66740, 83660, 126380, 133480, 167320, 252760, 296993, 593986, 1187972, 1484965, 2375944, 2969930, 5939860, 11879720]

約数ペア:

[(1, 11879720), (2, 5939860), (4, 2969930), (5, 2375944), (8, 1484965), (10, 1187972), (20, 593986), (40, 296993), (47, 252760), (71, 167320), (89, 133480), (94, 126380), (142, 83660), (178, 66740), (188, 63190), (235, 50552), (284, 41830), (355, 33464), (356, 33370), (376, 31595), (445, 26696), (470, 25276), (568, 20915), (710, 16732), (712, 16685), (890, 13348), (940, 12638), (1420, 8366), (1780, 6674), (1880, 6319), (2840, 4183), (3337, 3560)]