21093968

素因数分解:

$2^4\times 7^1\times {\mathrm{331}}^1\times {\mathrm{569}}^1$

素因数の和:915

約数の個数: 40

約数和(自身を含む): 46931520

約数和(自身を除く): 25837552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 331, 569, 662, 1138, 1324, 2276, 2317, 2648, 3983, 4552, 4634, 5296, 7966, 9104, 9268, 15932, 18536, 31864, 37072, 63728, 188339, 376678, 753356, 1318373, 1506712, 2636746, 3013424, 5273492, 10546984, 21093968]

約数ペア:

[(1, 21093968), (2, 10546984), (4, 5273492), (7, 3013424), (8, 2636746), (14, 1506712), (16, 1318373), (28, 753356), (56, 376678), (112, 188339), (331, 63728), (569, 37072), (662, 31864), (1138, 18536), (1324, 15932), (2276, 9268), (2317, 9104), (2648, 7966), (3983, 5296), (4552, 4634)]