21919404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1979}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 33964116

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 156, 213, 284, 426, 852, 923, 1846, 1979, 2769, 3692, 3958, 5538, 5937, 7916, 11076, 11874, 23748, 25727, 51454, 77181, 102908, 140509, 154362, 281018, 308724, 421527, 562036, 843054, 1686108, 1826617, 3653234, 5479851, 7306468, 10959702, 21919404]

約数ペア:

[(1, 21919404), (2, 10959702), (3, 7306468), (4, 5479851), (6, 3653234), (12, 1826617), (13, 1686108), (26, 843054), (39, 562036), (52, 421527), (71, 308724), (78, 281018), (142, 154362), (156, 140509), (213, 102908), (284, 77181), (426, 51454), (852, 25727), (923, 23748), (1846, 11874), (1979, 11076), (2769, 7916), (3692, 5937), (3958, 5538)]