28531420

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6761}}^1$

素因数の和:6981

約数の個数: 24

約数和(自身を含む): 60208848

約数和(自身を除く): 31677428

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 6761, 13522, 27044, 33805, 67610, 135220, 1426571, 2853142, 5706284, 7132855, 14265710, 28531420]

約数ペア:

[(1, 28531420), (2, 14265710), (4, 7132855), (5, 5706284), (10, 2853142), (20, 1426571), (211, 135220), (422, 67610), (844, 33805), (1055, 27044), (2110, 13522), (4220, 6761)]