20511260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:747

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 36098020

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 665, 701, 770, 836, 1045, 1330, 1402, 1463, 1540, 2090, 2660, 2804, 2926, 3505, 4180, 4907, 5852, 7010, 7315, 7711, 9814, 13319, 14020, 14630, 15422, 19628, 24535, 26638, 29260, 30844, 38555, 49070, 53276, 53977, 66595, 77110, 93233, 98140, 107954, 133190, 146509, 154220, 186466, 215908, 266380, 269885, 293018, 372932, 466165, 539770, 586036, 732545, 932330, 1025563, 1079540, 1465090, 1864660, 2051126, 2930180, 4102252, 5127815, 10255630, 20511260]

約数ペア:

[(1, 20511260), (2, 10255630), (4, 5127815), (5, 4102252), (7, 2930180), (10, 2051126), (11, 1864660), (14, 1465090), (19, 1079540), (20, 1025563), (22, 932330), (28, 732545), (35, 586036), (38, 539770), (44, 466165), (55, 372932), (70, 293018), (76, 269885), (77, 266380), (95, 215908), (110, 186466), (133, 154220), (140, 146509), (154, 133190), (190, 107954), (209, 98140), (220, 93233), (266, 77110), (308, 66595), (380, 53977), (385, 53276), (418, 49070), (532, 38555), (665, 30844), (701, 29260), (770, 26638), (836, 24535), (1045, 19628), (1330, 15422), (1402, 14630), (1463, 14020), (1540, 13319), (2090, 9814), (2660, 7711), (2804, 7315), (2926, 7010), (3505, 5852), (4180, 4907)]