21075768

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:338

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 47353032

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 53, 54, 56, 63, 72, 84, 106, 108, 126, 159, 168, 189, 212, 216, 252, 263, 318, 371, 378, 424, 477, 504, 526, 636, 742, 756, 789, 954, 1052, 1113, 1272, 1431, 1484, 1512, 1578, 1841, 1908, 2104, 2226, 2367, 2862, 2968, 3156, 3339, 3682, 3816, 4452, 4734, 5523, 5724, 6312, 6678, 7101, 7364, 8904, 9468, 10017, 11046, 11448, 13356, 13939, 14202, 14728, 16569, 18936, 20034, 22092, 26712, 27878, 28404, 33138, 40068, 41817, 44184, 49707, 55756, 56808, 66276, 80136, 83634, 97573, 99414, 111512, 125451, 132552, 167268, 195146, 198828, 250902, 292719, 334536, 376353, 390292, 397656, 501804, 585438, 752706, 780584, 878157, 1003608, 1170876, 1505412, 1756314, 2341752, 2634471, 3010824, 3512628, 5268942, 7025256, 10537884, 21075768]

約数ペア:

[(1, 21075768), (2, 10537884), (3, 7025256), (4, 5268942), (6, 3512628), (7, 3010824), (8, 2634471), (9, 2341752), (12, 1756314), (14, 1505412), (18, 1170876), (21, 1003608), (24, 878157), (27, 780584), (28, 752706), (36, 585438), (42, 501804), (53, 397656), (54, 390292), (56, 376353), (63, 334536), (72, 292719), (84, 250902), (106, 198828), (108, 195146), (126, 167268), (159, 132552), (168, 125451), (189, 111512), (212, 99414), (216, 97573), (252, 83634), (263, 80136), (318, 66276), (371, 56808), (378, 55756), (424, 49707), (477, 44184), (504, 41817), (526, 40068), (636, 33138), (742, 28404), (756, 27878), (789, 26712), (954, 22092), (1052, 20034), (1113, 18936), (1272, 16569), (1431, 14728), (1484, 14202), (1512, 13939), (1578, 13356), (1841, 11448), (1908, 11046), (2104, 10017), (2226, 9468), (2367, 8904), (2862, 7364), (2968, 7101), (3156, 6678), (3339, 6312), (3682, 5724), (3816, 5523), (4452, 4734)]