21091672

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 48787200

約数和(自身を除く): 27695528

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 43, 56, 76, 86, 133, 152, 172, 266, 301, 344, 461, 532, 602, 817, 922, 1064, 1204, 1634, 1844, 2408, 3227, 3268, 3688, 5719, 6454, 6536, 8759, 11438, 12908, 17518, 19823, 22876, 25816, 35036, 39646, 45752, 61313, 70072, 79292, 122626, 138761, 158584, 245252, 277522, 376637, 490504, 555044, 753274, 1110088, 1506548, 2636459, 3013096, 5272918, 10545836, 21091672]

約数ペア:

[(1, 21091672), (2, 10545836), (4, 5272918), (7, 3013096), (8, 2636459), (14, 1506548), (19, 1110088), (28, 753274), (38, 555044), (43, 490504), (56, 376637), (76, 277522), (86, 245252), (133, 158584), (152, 138761), (172, 122626), (266, 79292), (301, 70072), (344, 61313), (461, 45752), (532, 39646), (602, 35036), (817, 25816), (922, 22876), (1064, 19823), (1204, 17518), (1634, 12908), (1844, 11438), (2408, 8759), (3227, 6536), (3268, 6454), (3688, 5719)]