31958120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 74649600

約数和(自身を除く): 42691480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 89, 94, 178, 188, 191, 235, 356, 376, 382, 445, 470, 712, 764, 890, 940, 955, 1528, 1780, 1880, 1910, 3560, 3820, 4183, 7640, 8366, 8977, 16732, 16999, 17954, 20915, 33464, 33998, 35908, 41830, 44885, 67996, 71816, 83660, 84995, 89770, 135992, 167320, 169990, 179540, 339980, 359080, 679960, 798953, 1597906, 3195812, 3994765, 6391624, 7989530, 15979060, 31958120]

約数ペア:

[(1, 31958120), (2, 15979060), (4, 7989530), (5, 6391624), (8, 3994765), (10, 3195812), (20, 1597906), (40, 798953), (47, 679960), (89, 359080), (94, 339980), (178, 179540), (188, 169990), (191, 167320), (235, 135992), (356, 89770), (376, 84995), (382, 83660), (445, 71816), (470, 67996), (712, 44885), (764, 41830), (890, 35908), (940, 33998), (955, 33464), (1528, 20915), (1780, 17954), (1880, 16999), (1910, 16732), (3560, 8977), (3820, 8366), (4183, 7640)]