20212808

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 50433600

約数和(自身を除く): 30220792

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 56, 76, 77, 88, 121, 133, 152, 154, 157, 209, 242, 266, 308, 314, 418, 484, 532, 616, 628, 836, 847, 968, 1064, 1099, 1256, 1463, 1672, 1694, 1727, 2198, 2299, 2926, 2983, 3388, 3454, 4396, 4598, 5852, 5966, 6776, 6908, 8792, 9196, 11704, 11932, 12089, 13816, 16093, 18392, 18997, 20881, 23864, 24178, 32186, 32813, 37994, 41762, 48356, 64372, 65626, 75988, 83524, 96712, 128744, 131252, 132979, 151976, 167048, 229691, 262504, 265958, 360943, 459382, 531916, 721886, 918764, 1063832, 1443772, 1837528, 2526601, 2887544, 5053202, 10106404, 20212808]

約数ペア:

[(1, 20212808), (2, 10106404), (4, 5053202), (7, 2887544), (8, 2526601), (11, 1837528), (14, 1443772), (19, 1063832), (22, 918764), (28, 721886), (38, 531916), (44, 459382), (56, 360943), (76, 265958), (77, 262504), (88, 229691), (121, 167048), (133, 151976), (152, 132979), (154, 131252), (157, 128744), (209, 96712), (242, 83524), (266, 75988), (308, 65626), (314, 64372), (418, 48356), (484, 41762), (532, 37994), (616, 32813), (628, 32186), (836, 24178), (847, 23864), (968, 20881), (1064, 18997), (1099, 18392), (1256, 16093), (1463, 13816), (1672, 12089), (1694, 11932), (1727, 11704), (2198, 9196), (2299, 8792), (2926, 6908), (2983, 6776), (3388, 5966), (3454, 5852), (4396, 4598)]