19973968

素因数分解:

$2^4\times 7^2\times {\mathrm{73}}^1\times {\mathrm{349}}^1$

素因数の和:444

約数の個数: 60

約数和(自身を含む): 45765300

約数和(自身を除く): 25791332

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 73, 98, 112, 146, 196, 292, 349, 392, 511, 584, 698, 784, 1022, 1168, 1396, 2044, 2443, 2792, 3577, 4088, 4886, 5584, 7154, 8176, 9772, 14308, 17101, 19544, 25477, 28616, 34202, 39088, 50954, 57232, 68404, 101908, 136808, 178339, 203816, 273616, 356678, 407632, 713356, 1248373, 1426712, 2496746, 2853424, 4993492, 9986984, 19973968]

約数ペア:

[(1, 19973968), (2, 9986984), (4, 4993492), (7, 2853424), (8, 2496746), (14, 1426712), (16, 1248373), (28, 713356), (49, 407632), (56, 356678), (73, 273616), (98, 203816), (112, 178339), (146, 136808), (196, 101908), (292, 68404), (349, 57232), (392, 50954), (511, 39088), (584, 34202), (698, 28616), (784, 25477), (1022, 19544), (1168, 17101), (1396, 14308), (2044, 9772), (2443, 8176), (2792, 7154), (3577, 5584), (4088, 4886)]