19976908

素因数分解:

$2^2\times 7^2\times {\mathrm{227}}^1\times {\mathrm{449}}^1$

素因数の和:694

約数の個数: 36

約数和(自身を含む): 40937400

約数和(自身を除く): 20960492

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 227, 449, 454, 898, 908, 1589, 1796, 3143, 3178, 6286, 6356, 11123, 12572, 22001, 22246, 44002, 44492, 88004, 101923, 203846, 407692, 713461, 1426922, 2853844, 4994227, 9988454, 19976908]

約数ペア:

[(1, 19976908), (2, 9988454), (4, 4994227), (7, 2853844), (14, 1426922), (28, 713461), (49, 407692), (98, 203846), (196, 101923), (227, 88004), (449, 44492), (454, 44002), (898, 22246), (908, 22001), (1589, 12572), (1796, 11123), (3143, 6356), (3178, 6286)]