19781874

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{887}}^1$

素因数の和:964

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 31366926

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 59, 63, 118, 126, 177, 189, 354, 378, 413, 531, 826, 887, 1062, 1239, 1593, 1774, 2478, 2661, 3186, 3717, 5322, 6209, 7434, 7983, 11151, 12418, 15966, 18627, 22302, 23949, 37254, 47898, 52333, 55881, 104666, 111762, 156999, 167643, 313998, 335286, 366331, 470997, 732662, 941994, 1098993, 1412991, 2197986, 2825982, 3296979, 6593958, 9890937, 19781874]

約数ペア:

[(1, 19781874), (2, 9890937), (3, 6593958), (6, 3296979), (7, 2825982), (9, 2197986), (14, 1412991), (18, 1098993), (21, 941994), (27, 732662), (42, 470997), (54, 366331), (59, 335286), (63, 313998), (118, 167643), (126, 156999), (177, 111762), (189, 104666), (354, 55881), (378, 52333), (413, 47898), (531, 37254), (826, 23949), (887, 22302), (1062, 18627), (1239, 15966), (1593, 12418), (1774, 11151), (2478, 7983), (2661, 7434), (3186, 6209), (3717, 5322)]