19983376

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:452

約数の個数: 60

約数和(自身を含む): 45800640

約数和(自身を除く): 25817264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 359, 392, 497, 568, 718, 784, 994, 1136, 1436, 1988, 2513, 2872, 3479, 3976, 5026, 5744, 6958, 7952, 10052, 13916, 17591, 20104, 25489, 27832, 35182, 40208, 50978, 55664, 70364, 101956, 140728, 178423, 203912, 281456, 356846, 407824, 713692, 1248961, 1427384, 2497922, 2854768, 4995844, 9991688, 19983376]

約数ペア:

[(1, 19983376), (2, 9991688), (4, 4995844), (7, 2854768), (8, 2497922), (14, 1427384), (16, 1248961), (28, 713692), (49, 407824), (56, 356846), (71, 281456), (98, 203912), (112, 178423), (142, 140728), (196, 101956), (284, 70364), (359, 55664), (392, 50978), (497, 40208), (568, 35182), (718, 27832), (784, 25489), (994, 20104), (1136, 17591), (1436, 13916), (1988, 10052), (2513, 7952), (2872, 6958), (3479, 5744), (3976, 5026)]