21055496

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 52941600

約数和(自身を除く): 31886104

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 49, 56, 76, 77, 88, 98, 133, 152, 154, 196, 209, 257, 266, 308, 392, 418, 514, 532, 539, 616, 836, 931, 1028, 1064, 1078, 1463, 1672, 1799, 1862, 2056, 2156, 2827, 2926, 3598, 3724, 4312, 4883, 5654, 5852, 7196, 7448, 9766, 10241, 11308, 11704, 12593, 14392, 19532, 19789, 20482, 22616, 25186, 34181, 39064, 39578, 40964, 50372, 53713, 68362, 79156, 81928, 100744, 107426, 136724, 138523, 158312, 214852, 239267, 273448, 277046, 375991, 429704, 478534, 554092, 751982, 957068, 1108184, 1503964, 1914136, 2631937, 3007928, 5263874, 10527748, 21055496]

約数ペア:

[(1, 21055496), (2, 10527748), (4, 5263874), (7, 3007928), (8, 2631937), (11, 1914136), (14, 1503964), (19, 1108184), (22, 957068), (28, 751982), (38, 554092), (44, 478534), (49, 429704), (56, 375991), (76, 277046), (77, 273448), (88, 239267), (98, 214852), (133, 158312), (152, 138523), (154, 136724), (196, 107426), (209, 100744), (257, 81928), (266, 79156), (308, 68362), (392, 53713), (418, 50372), (514, 40964), (532, 39578), (539, 39064), (616, 34181), (836, 25186), (931, 22616), (1028, 20482), (1064, 19789), (1078, 19532), (1463, 14392), (1672, 12593), (1799, 11704), (1862, 11308), (2056, 10241), (2156, 9766), (2827, 7448), (2926, 7196), (3598, 5852), (3724, 5654), (4312, 4883)]