21501984

素因数分解:

$2^5\times 3^1\times 7^3\times {\mathrm{653}}^1$

素因数の和:687

約数の個数: 96

約数和(自身を含む): 65923200

約数和(自身を除く): 44421216

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 84, 96, 98, 112, 147, 168, 196, 224, 294, 336, 343, 392, 588, 653, 672, 686, 784, 1029, 1176, 1306, 1372, 1568, 1959, 2058, 2352, 2612, 2744, 3918, 4116, 4571, 4704, 5224, 5488, 7836, 8232, 9142, 10448, 10976, 13713, 15672, 16464, 18284, 20896, 27426, 31344, 31997, 32928, 36568, 54852, 62688, 63994, 73136, 95991, 109704, 127988, 146272, 191982, 219408, 223979, 255976, 383964, 438816, 447958, 511952, 671937, 767928, 895916, 1023904, 1343874, 1535856, 1791832, 2687748, 3071712, 3583664, 5375496, 7167328, 10750992, 21501984]

約数ペア:

[(1, 21501984), (2, 10750992), (3, 7167328), (4, 5375496), (6, 3583664), (7, 3071712), (8, 2687748), (12, 1791832), (14, 1535856), (16, 1343874), (21, 1023904), (24, 895916), (28, 767928), (32, 671937), (42, 511952), (48, 447958), (49, 438816), (56, 383964), (84, 255976), (96, 223979), (98, 219408), (112, 191982), (147, 146272), (168, 127988), (196, 109704), (224, 95991), (294, 73136), (336, 63994), (343, 62688), (392, 54852), (588, 36568), (653, 32928), (672, 31997), (686, 31344), (784, 27426), (1029, 20896), (1176, 18284), (1306, 16464), (1372, 15672), (1568, 13713), (1959, 10976), (2058, 10448), (2352, 9142), (2612, 8232), (2744, 7836), (3918, 5488), (4116, 5224), (4571, 4704)]