18665748

素因数分解:

$2^2\times 3^3\times {\mathrm{401}}^1\times {\mathrm{431}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 48625920

約数和(自身を除く): 29960172

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 401, 431, 802, 862, 1203, 1293, 1604, 1724, 2406, 2586, 3609, 3879, 4812, 5172, 7218, 7758, 10827, 11637, 14436, 15516, 21654, 23274, 43308, 46548, 172831, 345662, 518493, 691324, 1036986, 1555479, 2073972, 3110958, 4666437, 6221916, 9332874, 18665748]

約数ペア:

[(1, 18665748), (2, 9332874), (3, 6221916), (4, 4666437), (6, 3110958), (9, 2073972), (12, 1555479), (18, 1036986), (27, 691324), (36, 518493), (54, 345662), (108, 172831), (401, 46548), (431, 43308), (802, 23274), (862, 21654), (1203, 15516), (1293, 14436), (1604, 11637), (1724, 10827), (2406, 7758), (2586, 7218), (3609, 5172), (3879, 4812)]