21043952

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8069}}^1$

素因数の和:8240

約数の個数: 20

約数和(自身を含む): 41027880

約数和(自身を除く): 19983928

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8069, 16138, 32276, 64552, 129104, 1315247, 2630494, 5260988, 10521976, 21043952]

約数ペア:

[(1, 21043952), (2, 10521976), (4, 5260988), (8, 2630494), (16, 1315247), (163, 129104), (326, 64552), (652, 32276), (1304, 16138), (2608, 8069)]