21049048

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{823}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 41529600

約数和(自身を除く): 20480552

約数列:

[1, 2, 4, 8, 23, 46, 92, 139, 184, 278, 556, 823, 1112, 1646, 3197, 3292, 6394, 6584, 12788, 18929, 25576, 37858, 75716, 114397, 151432, 228794, 457588, 915176, 2631131, 5262262, 10524524, 21049048]

約数ペア:

[(1, 21049048), (2, 10524524), (4, 5262262), (8, 2631131), (23, 915176), (46, 457588), (92, 228794), (139, 151432), (184, 114397), (278, 75716), (556, 37858), (823, 25576), (1112, 18929), (1646, 12788), (3197, 6584), (3292, 6394)]