20974156

素因数分解:

$2^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{947}}^1$

素因数の和:1078

約数の個数: 36

約数和(自身を含む): 43120728

約数和(自身を除く): 22146572

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 196, 226, 452, 791, 947, 1582, 1894, 3164, 3788, 5537, 6629, 11074, 13258, 22148, 26516, 46403, 92806, 107011, 185612, 214022, 428044, 749077, 1498154, 2996308, 5243539, 10487078, 20974156]

約数ペア:

[(1, 20974156), (2, 10487078), (4, 5243539), (7, 2996308), (14, 1498154), (28, 749077), (49, 428044), (98, 214022), (113, 185612), (196, 107011), (226, 92806), (452, 46403), (791, 26516), (947, 22148), (1582, 13258), (1894, 11074), (3164, 6629), (3788, 5537)]