21009004

素因数分解:

$2^2\times {\mathrm{271}}^1\times {\mathrm{19381}}^1$

素因数の和:19656

約数の個数: 12

約数和(自身を含む): 36903328

約数和(自身を除く): 15894324

約数列:

[1, 2, 4, 271, 542, 1084, 19381, 38762, 77524, 5252251, 10504502, 21009004]

約数ペア:

[(1, 21009004), (2, 10504502), (4, 5252251), (271, 77524), (542, 38762), (1084, 19381)]