21066416

素因数分解:

$2^4\times 7^1\times {\mathrm{239}}^1\times {\mathrm{787}}^1$

素因数の和:1041

約数の個数: 40

約数和(自身を含む): 46901760

約数和(自身を除く): 25835344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 239, 478, 787, 956, 1574, 1673, 1912, 3148, 3346, 3824, 5509, 6296, 6692, 11018, 12592, 13384, 22036, 26768, 44072, 88144, 188093, 376186, 752372, 1316651, 1504744, 2633302, 3009488, 5266604, 10533208, 21066416]

約数ペア:

[(1, 21066416), (2, 10533208), (4, 5266604), (7, 3009488), (8, 2633302), (14, 1504744), (16, 1316651), (28, 752372), (56, 376186), (112, 188093), (239, 88144), (478, 44072), (787, 26768), (956, 22036), (1574, 13384), (1673, 12592), (1912, 11018), (3148, 6692), (3346, 6296), (3824, 5509)]